Leon, mate... I've been through this not long ago:
http://www.iceinspace.com.au/forum/s...ighlight=fraud
Have a look at what I did - I managed to get the bulk of it back. I hope you and Alice can do the same!
Actually re-reading the attached thread doesn't tell you much.

I tracked down the credit transfer company that the money was transferred through (the company that made the debit on my account) and advised them I had not authorised the debit and wanted it refunded. Had that not worked, I presumably still had some recourse through my credit union...
Scumbags!
Al.