In fact, there are only two reasons why credit cards are frozen. One is that overdue repayment is frozen, and the other is that suspected cash withdrawal is frozen. If the cardholder is overdue, he generally knows the reason for the freeze. Don't ask the bank again at this time, you should change the arrears first! Call the bank again to explain the situation and ask for unfreezing. If the situation is not serious, as long as the bank confirms that you have successfully paid off the debt, it will unfreeze it for you. However, if it is because of frequent use of POS machines for large-scale consumption or large-scale cash withdrawal, the bank will freeze the cardholder's credit card on the grounds of suspected cash withdrawal. At this time, you should call the bank to explain the situation and provide the credit card consumption voucher for nearly one year to apply for thawing. If there are no cardholders who hold these vouchers, they can only wait for processing.