Are you sure there is no crime though, surely spending money that you absolutely know is not yours is against the law. Even if not a criminal matter then surely it could be pursued through the civil courts?
Either way this all seems a bit dodgy
They cannot be that hard up to not notice there balance being down by tens of thousands, not to mention not even realise their balance is not going up by a thousand every month. Something does not ring true here?
Surely they would have redress through the courts or maybe even the police as the...