Originally Posted by Due

I had a bank that duplicated a wire transfer before, it was going from our main company to our payroll company. I notified the bank when I saw they took the money twice and they immediately returned the money for the second wire.

On the receiving account both transfers arrived, after a few days the bank contacted me and said they have gotten a request to return one of the transfers, they wanted to know if they could return it or not. If I had said no the money would have stayed in the account, even though it was an obvious mistake, the bank confirmed that to me

Don't confuse "refunds" with "chargebacks"