The RTIAct is a miraculous provision to help in obtaining information. The matter ends there. One has to resort to other cources to challenge the contents of the information if found irregular. Similarly the Audit can give you only what is "HELD" by them. Why they are not insisting provision of the obligatory receipt etc., does not fall under the ambit of RTI Act. In case the audit says that they didnot insist the receipt while auditing TA/DA Bills, you may report it to the Accountant General or even the C &AG exposing the corruption involved. As far as RTI Act is concrned the Audit can give only the information HELD by them.