I'd also caution against a lawsuit of the auditors for the loss of frequent flyer points. The audit opinion is under the Corporations Law about the financial statements, not a guarantee about the viability of some points accrued under a loyalty scheme. You'd be better off redeeming them now for whatever you can and getting some value out of them, rather than losing them and then spending actual dollars on a fruitless lawsuit. Lots of chatter about that on the Australian Frequent Flyer forums.
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