Provide consumption invoices. According to public information, after the credit card is frozen, you can directly call the customer service number to say that the credit card has been blocked. The customer service will ask the cardholder to provide consumption invoices and POS purchase orders. As long as a formal invoice and POS can be issued for the consumption suspected of being cashed out. The purchase form can be sent to the bank's mailbox by fax or scan. A credit card is a credit certificate issued by a commercial bank or credit card company to consumers with qualified credit.