Bank Failure to assist

I mistakingly made a deposit for all our monthly living expenses into the wrong account (this is my wifes old bank account at standard bank) this account is closed so the money should return. I phoned fnb after immediately realising what happened to try and reverse the transaction but i am told it is to late i must wait for it to return, problem now is that it has been over a week now and still not one of these banks can tell me where my money is, Fnb says that standard bank must trace it and standard says fnb has to trace it Now i know it was my mistake to start off with but surely i should have had my money back by now. I keep asking for the right people to speak to but i am just getting shoved from one to the next after phoning 2-3 hours everyday What do i do now