This is not necessarily true. According to the regulations, it should be returned. But in many cases, if the other bank and the payee verify that the money really belongs to them, they can also issue an application for entry and explain the reasons, and then the money can also be credited to their accounts. In short, don't worry, the money will be fine. Now you'd better contact each other in various ways to find out whether the money has been received. If you haven't received it, go to the remittance bank to check the refund form.