If this happen to you or your spouse, what would you do?
Edit: We went to the bank the next day. At first the teller was confused but we talked to the manager. We explained what happen, showed the receipt and money. We told the manager we wanted to do the right thing and don't want anyone to get fired cause we all make mistakes. She said they'll do some audit and no one is going to get fired. Glad we did the right choice.