First, make sure that the money is from a bank card that has not been cancelled when you withdraw money, and not a bank card that has been cancelled when you withdraw money (in this case, the withdrawal should be returned if it fails). Secondly, go to the bank to check whether the card has been replaced (report loss and change card, etc.). If the amount is within, just unbind it and rebind it. If the card has been cancelled, check when it was cancelled and whether you took money at that time. If you are sure that you have withdrawn money but the money has not been deposited on the card and has not been returned, please contact WeChat customer service.