Background
4 All the litigation instituted by Mr Singh and the subject of my consideration relates back to a Centrelink debt ("the original debt") raised against Mr Singh on 4 November 1999 and which resulted in the sum of $88,633 being compulsorily deducted from a judgment debt otherwise payable to Mr Singh. There have been two kinds of proceedings instituted by Mr Singh, some challenging the original debt and some contesting his bankruptcy. The two categories of litigation are linked. Mr Singh was declared bankrupt due to non-payment of legal costs incurred in litigation contesting the original debt. In the bankruptcy proceedings, Mr Singh has often raised issues directed to overturning the original debt.
5 The original debt was incurred in the following circumstances which were helpfully summarised by Weinberg J at [8]-[13] in Singh v Secretary, Department of Employment & Workplace Relations [2006] FCA 1381:
8. Mr Singh was born in 1950. He was employed by the Public Transport Corporation from 1983, initially as a tram conductor, and later as a tram driver.
9. On 2 January 1991, Mr Singh suffered a work-related injury, which resulted in an ongoing medical condition. Between 12 June 1991 and 30 November 1993, following an admission of liability, Mr Singh received weekly compensation payments from an insurer, pursuant to the Accident Compensation Act 1985 (Vic).
10. Between 28 October 1991 and 6 December 1991, and between 1 October 1992 and 14 October 1992, Mr Singh also received sickness benefits, pursuant to the Social Security Act 1991 (Cth), totalling $262.80. After the cessation of his weekly compensation payments, from 16 December 1993 to 26 October 1999, Mr Singh received payments of disability support pension, pursuant to the Social Security Act, totalling $44,185.27. During the same period, Mr Singh's wife, Ms Amarjit Kaur, received a total of $44,185.27 by way of disability support wife pension. The total amount received by Mr Singh and Ms Kaur up to 26 October 1999, pursuant to the Social Security Act, was $88,633.34.
11. On 10 March 1995, as a result of the settlement of a proceeding commenced by him, Mr Singh received a lump sum compensation payment of $55,153, pursuant to the table of maims in s 98 of the Accident Compensation Act.
12. Subsequently, Mr Singh commenced a further proceeding, seeking to undo the settlement of his claim, and to resume the payment of weekly compensation payments. On 20 October 1999, the County Court made an order requiring the insurer to pay to Mr Singh arrears of weekly compensation from 1 September 1992 to 20 October 1999, and for such payments to continue in accordance with law. In consequence of the judgment, the total sum of arrears of weekly compensation was $129,382.92. Mr Singh was also held to be entitled to receive a lump sum of $80,000, pursuant to the table of maims. From this was deducted the amount of $55,153, which had been paid to Mr Singh pursuant to the previous settlement. As a result, he received a further sum of $24,847 on 22 November 1999.
13. On 4 November 1999, Centrelink advised the insurer that it was obliged to pay to Centrelink $88,633.34 in respect of payments of social security, received by Mr Singh and Ms Kaur, between 28 October 1991 and 26 October 1999. The insurer repaid this sum to Centrelink, out of monies it would otherwise have paid to Mr Singh, pursuant to the judgment of the County Court. Also on 4 November 1999, Centrelink advised Mr Singh of its decision to recover the amount directly from the insurer. Centrelink cancelled Mr Singh's disability support pension and Ms Kaur's wife pension, because the payment of weekly compensation precluded any such payments.