Very upset about the way I was treated at the branch.

I had an issue today when I deposited money into a wrong account at an ATM. I went to a branch and I was told they could not help me if they do not get hold of the account holder where I wrongful deposited the money to. I left the branch without being helped and the staff seem not to care at all about my problem. I was told to go and open a civil case which will take forever. I want back my money now. At the branch they said they do see the money funds but they can't reverse it. Capitec is really pathetic I must say. I just lost R3500 and they claim they can't help me at all. Is that even professional for a bank to treat us as customers like this as if a person must not do mistakes.