You can contact bank customers. Generally, the bank will issue a new card to the cardholder. The number, function and limit of the new card are the same as those of the original card, but the validity period has changed. The new card received must be opened before it can be used.

Credit card refund, if there is a consumption directly offset the consumption, the repayment amount will decrease, if it has been paid off, your available amount will increase, if it is offset at the time of consumption, the next bill will decrease.