Any claim lodged within 1 month of a policy being taken out is always, no if's, but's about it, referred to investigations for review. Its automatically done by the system and no claims manager can change it or touch the claim after it has been referred. You cannot, and neither can the claims managers, speak with investigations unless they contact you first and they typically take about 1-2 weeks just to look at it. To prove any criminal charge part of the offence is that they need to prove you attempted to obtain a benefit, that would be a stretch if the claim is only at lodgement. Don't stress about it, either investigations will contact you (don't reply to them, they will give up eventually and withdraw the claim) or the claims manager will contact you once it is released from investigations (you can speak with them to withdraw the claim). There is nothing you can do at this stage to have the claim withdrawn, just wait, even though I know its stressful.