Competing Contentions about the alleged overpayment
12How did the alleged overpayment arise? Although the facts are relatively complex, the overpayment contest turns upon two competing versions of conversations and written communications mainly between Mr Donoghue and Mr Sorensen between January and May 2006 concerning the sale of a parcel of 19.026 million shares that he controlled in Plus SMS. Aspects of these conversations have already been the subject of findings in the principal judgment, at [225] and [227]. In support of Ms Avery's case, Mr Donoghue says that he sold this parcel of 19.026 million shares for a total consideration of NZ$10.425 million. Ms Avery says that sale proceeds in this amount, together with other sale proceeds from Plus SMS options, were sufficient to fund the purchase of Apartment 901 for her. But Saree says that the parcel of shares was sold for a lower total consideration of NZ$7.3 million.
13The difference of NZ$3.125 million (NZ$10.425 less NZ$7.3 million) between these two figures is important. One of several results of an agreement between Mr Donoghue and Mr Sorensen at the lower figure would be a shortfall of exactly NZ$309,507 from the funds that Ms Avery required to complete the purchase of Apartment 901. But an agreement at the higher figure between them would have been sufficient for her wholly to complete the purchase of the apartment with funds wholly directed from Mr Donoghue out of these larger sale proceeds. The purchase of Apartment 901 did settle in May 2006. Ms Avery says that it settled out of the NZ$10.425 million proceeds of Mr Donoghue's sale of Plus SMS shares. Saree says that Mr Donoghue only made available NZ$7.3 million to fund the Apartment 901 purchase, and that the purchase only settled because Saree mistakenly applied NZ$309,507 of other money to make up the shortfall in purchase monies. Saree claims that it mistakenly applied money which it held on trust for Lava, and that it can recover this money from Ms Avery under the Saree Mortgage.
14More detail is required about both these competing versions. At the opening of 2006 Mr Donoghue controlled both shares and options in Plus SMS through Plus Trustee. He controlled 19.026 million Plus SMS shares and 6 million Plus SMS options.
15The Avery/Donoghue version. On Mr Donoghue's version he agreed with Mr Sorensen to the sale of the 19,026,000 Plus SMS shares. He says that the deal he negotiated with Mr Sorensen was for Plus Trustee to sell 18,000,000 of these Plus SMS shares for NZ$10.425 million (or approximately NZ$0.58 per share), with the balance of 1,026,000 shares that he, Mr Donoghue, controlled through Plus Trustee being transferred to third parties in Hong Kong for no additional consideration. Mr Sorensen denied the making of any such agreement.
16This judgment sometimes refers to the sale of "19 million" shares rather than the exact number of Plus SMS shares that Mr Donoghue controlled through Plus Trustee of 19,026,000 shares. But because the transfer of the odd number of shares, 1,026,000, was for no consideration and was not in dispute, the parties themselves tended to refer to the sale of "19 million" shares. So with that minor clarification the Court has often adopted the parties' own language without further explanation that the numbers are not perfectly correct.
17Mr Donoghue also says that he agreed to sell his 6 million Plus SMS share options to Mr Ken Wikeley for NZ$2.1 million. But if Mr Donoghue is right in both his allegations, he, or the trusts for whom he speaks, would have been entitled to receive total sale proceeds of NZ$12.525 million (being NZ$10.425 million for the shares and NZ$2.1 million for the options). These proceedings did not involve any attempt by Mr Donoghue to recover that NZ$12.525 million, which he alleges remains partly unpaid. Rather, Ms Avery's contentions about the correctness of Mr Donoghue's version of these conversations have a simpler purpose: to show that there were sufficient proceeds from these Plus SMS share sales to answer Saree's contentions that to complete the purchase of Apartment 901 it had applied NZ$309,507 of funds it held on behalf of Lava, rather than funds Mr Donoghue controlled.
18The Saree version. Mr Sorensen's version is that between late October 2005 and 31 January 2006 he did discuss with Mr Donoghue the sale of the 19,026,000 Plus SMS shares that Plus Trustee held for Mr Donoghue's interests. And Mr Sorensen says that at Mr Donoghue's direction he did apply some of the proceeds of those sales to the purchase of Apartment 901. He says the following share and option transactions took place, on the following dates and generating the following sale proceeds: on 21 October 2005 Mr Donoghue's Family Trust (of which Plus Trustee was the trustee) sold 8 million shares in Plus SMS for NZ$2,500,000; on 25 January 2006 Mr Donoghue's Family Trust sold 3 million shares in Plus SMS for NZ$600,000; on 31 January 2006, Mr Donoghue's Family Trust sold 6 million options in Plus SMS for NZ$2,100,000; and, on 31 January 2006 Mr Donoghue's Family Trust sold 7 million shares in Plus SMS for NZ$2,100,000. Thus, on Mr Sorensen's version the sales of Plus SMS shares generated total proceeds of NZ$7.3 million, and the sale of Plus SMS options generated proceeds of NZ$2.1 million.
19But NZ$7.3 million from the sale of the Plus SMS shares was not enough to meet all Mr Donoghue's then pressing financial commitments: the first group of which were for Mr Donoghue's own domestic and business financial obligations, and the second group of which involved Ms Avery's financial obligations for the settlement of Apartment 901. Mr Sorensen says that NZ$3,710,215.40 of this NZ$7.3 million was paid at the direction of Mr Donoghue to Mr Donoghue's wife, to lawyers, to bankers and other persons, who had nothing to do with Ms Avery's apartment purchase. According to Mr Sorensen, that left a balance of the proceeds of the Plus SMS share sales of NZ$3,589,784.60 (being NZ$7,300,000 less NZ$3,710,215.40) to be applied, as Mr Donoghue directed, in relation to the purchase of Apartment 901.
20Mr Sorensen says that this balance of the proceeds of Plus SMS shares of NZ$3,589,784.60 was indeed paid by Saree at the direction of Mr Donoghue and that it was paid in three separate funds transfers: the first transfer was to fund the deposit of A$370,000 paid to the vendor of Apartment 901 upon the exchange of contracts; and, the balance of the funds were to put Dibbs Abbott Stillman (DAS) in funds to settle the conveyance of Apartment 901. Those payments were the following: a payment on 1 March 2006 of NZ$416,291.63 (the March 2006 NZ$ equivalent of A$370,000) into the trust account of Allen Wong and Co, the Apartment 901 vendor's solicitors, on account of the deposit; a payment on 31 March 2008 of NZ$1,950,000 into the DAS trust account; and a payment on 5 April 2006 of NZ$1,223,493 also to the DAS trust account (part of a larger transfer payment of $1,533,000 between Saree and DAS). These monies (NZ$416,291, NZ$1,950,000 and NZ$1,223,493) total the balance of NZ$3,589,784.60.
21The key to Saree's claimed overpayment is the circumstances of this last funds transfer of NZ$1,223,493 to DAS on 5 April 2006. On Mr Donoghue's version, this funds transfer undoubtedly included NZ$1,223,493 in proceeds from the sale of his Plus SMS shares. But Saree claims, and the evidence establishes, that it did direct a larger single payment of NZ$1,533,000 to be made to DAS on that date. Saree contends that the difference between the NZ$1,533,000 last payment made to the DAS trust account and the amount actually available for payment at Mr Donoghue's direction from the proceeds of sale of his controlled Plus SMS shares was NZ$309,507 (being NZ$1,533,000 less NZ$1,223,493). Saree claimed this is the mistaken overpayment that it made to Ms Avery from Lava's funds rather than from funds of the Donoghue Family Trust, or Mr Donoghue.
22The mathematical calculation of the overpayment is not in issue. The parties agree there is no dispute about Mr Sorensen's calculation of the overpayment is not in issue. If Saree's contentions about the consideration agreed for the sale of Plus SMS shares between Mr Donoghue and Mr Sorensen are accepted by the Court, then the parties accept that the amount Saree actually overpaid is NZ$309,507.
23The legal consequences of Saree mistakenly overpaying Ms Avery are clear and may be shortly stated. Saree claims that the overpayment was made as a result of a mistake of fact. If that is established, it would generate a personal restitutionary liability on the part of the recipient of those funds, Ms Avery, to repay the amount of the mistaken overpayment to Saree; "the prima facie liability to make restitution is imposed by the law upon the person who has been unjustly enriched": Australia and New Zealand Banking Group Ltd v Westpac Banking Corporation (1988) 164 CLR 662, at 673.
24The terms of the Saree Mortgage are broad enough to secure to Saree the repayment of monies, the obligation to repay which arises in restitution. The relevant terms of the Saree Mortgage were set out in the Court's second judgment at [11] to [18]. The definition of "Monies Owing" in the Saree Mortgage includes monies "whether or not within the contemplation of the parties"; "amounts owing or remaining unpaid to the Mortgagee in any manner and on any account whatever by the Mortgagor"; and, "monies owing... by reason wholly or partly of past events or by reason of any thing done or omitted by the mortgagee". The Saree Mortgage was entered into in September 2006 and registered in April 2007. All the payments and discussions presently in issue between the parties took place between October 2005 and May 2006. They were "past events" when the Saree Mortgage was executed. If they were payments then made by mistake, they resulted from the mortgagee's actions or omissions, and were remaining unpaid on account of Saree's restitutionary claim for their return. They fall within the Saree Mortgage's definition of "Monies Owing".
25So, what is in issue? Counsel for Ms Avery advanced a useful table to show what in all these transactions is really in issue. The account above of the two competing cases is accurately illustrated in this table.
26The table shows that the core dispute between the parties about the price of the 19 million shares is about the precise consideration for the parcel of 7 million Plus SMS shares agreed to be sold on 31 January 2006. There is no dispute: about the 1 million shares to be transferred to a Hong Kong company for no additional consideration; about the 3 million shares to be transferred to Lava for NZ$600,000; or, about the 6 million options to be transferred for NZ$2.1 million. There is a minor difference about the price of the 8 million shares to be transferred to Mr Wikeley (Saree says NZ$2.5 million and Ms Avery says NZ$2.505 million). But this discrepancy is not material for present purposes and can be disregarded. If Ms Avery is right the overall sale proceeds will cover this discrepancy.
27The parties' competing positions about the 7 million Plus SMS shares can be put concisely: Ms Avery says the consideration for these 7 million shares was NZ$7.32 million, whereas Saree (and Lava) say it was $2.1 million. The difference in contentions about the price of the 19 million shares (leaving aside the discrepancy about the 8 million shares), is therefore NZ$5.22 million (being the Avery/Donoghue NZ$10.42 million less the Saree/Lava NZ$5.2 million). This overall difference is accounted for by the same NZ$5.22 million difference in the 31 January parcel of 7 million shares (being NZ$7.32 million less NZ$2.1 million).
28Thus an important indicator in the fact finding process of the correctness of the Avery/Donoghue version will be whether documents and communications refer to a total consideration for the 19 million shares at a figure of NZ$10.42 million, or a lesser figure. An equally important indicator of the strength of the Avery/Donoghue case would be whether consideration for the 7 million shares said to have been sold on 31 January 2006 was NZ$7.32 million or a lesser figure. As the evidence emerged there was quite strong documentary support for the sale of the 19 million Plus SMS shares for a total consideration of NZ$10.425 million (allowing for the NZ$50,000 discrepancy).
29Another important indicator of the correctness of the Avery/Donoghoe version is timing. Mr Donoghue says he only discussed at Mr Sorenson's suggestions the sale of an additional 10 million shares (later broken into parcels of 7 million and 3 million shares at Mr Sorenson's suggestion) between 13 and 17 January 2006. Mr Sorenson says in contrast, that the 7 million and 3 million share parcels were negotiated between Mr Wikeley and Mr Donoghoe, and Mr Wikeley told him about the negotiations in December. The objective evidence that emerged is for more consistent with Mr Donoghue's version.
30This summary of the competing contentions and of the way the alleged overpayment arises, introduces the issues. But their resolution requires a closer analysis of the circumstances surrounding the sale of the Plus SMS shares that Mr Donoghue controlled through Plus Trustee.