24 Was Mrs Siglin in a position of disadvantage vis-a-vis the lenders? Yes, in the sense that she was elderly and she obtained no explanation of the mortgage from Mr Hayles and was not told to seek independent advice on that matter. I do not consider that she was really inexperienced in mortgage matters. This was her third mortgage, and the second one, to St George Bank, entered into only a year before, was, like this one, for the benefit of her son David. Do these two factors, old age, and lack of explanation, amount to a special disability which would justify setting the mortgage aside? Allied to that is another question. In the circumstances of these two disabilities, did the lenders, through Mr Hayles, take unconscientious advantage of Mrs Siglin in getting her to sign the mortgage? As previously stated, it is possible at a trial that Mrs Siglin will be able to establish that Mr Hayles knew that the balance of the money borrowed was going to her son and that she was relying on her son's advice in entering into this mortgage. At trial it might be established that Mr Hayles knew, or ought to have known, that Mrs Siglin was inexperienced in business matters. But in getting her to sign, did he take unconscientious advantage of her? I think not. When I compare this case with that of the Commercial Bank in Amadio, the bank knew all about the son and his insolvent business. The bank knew of his precarious financial position. The bank had been monitoring his account and selectively honouring some cheques and bouncing others. The bank knew, for example, that he had signed $45,000 in unmet cheques to be paid as soon as the mortgage was registered. In that case, too, Mr and Mrs Amadio were not only elderly but were elderly Italians with limited English. Mrs Siglin is elderly but there is no suggestion of limited English or of mental impairment. She has worked in several offices doing office work. She does have her leaving certificate. Her husband was a doctor in private practice. In Garcia the bank's intimate knowledge of the son's dodgy account was a major factor in getting the mortgage signed by the parents, unconditionally set aside. Mason, William and Deane JJ set it aside on the basis of unconscionable conduct. Dawson J dissented. Gibbs CJ set aside the mortgage on another basis. He considered the bank owed a duty to the mortgagors to disclose the unusual features relating to the overdrawn account and that the bank's non-disclosure amounted to a misrepresentation which was sufficient to have the deed set aside.