You can't. Refund after swiping a credit card, and the refund amount will be returned to the user's credit card. If it is a refund that arrives after the bill, it cannot be regarded as the current repayment, but can only be recorded in the next bill. Credit card payment cannot be refunded. If there is an agreement to refund, it shall be handled in accordance with the agreement. So you can't apply for a refund the next day after scanning the credit card code. Very safe.