After reporting the loss of the Bank of Communications credit card, you can directly call the 24-hour customer service hotline 400-800-9888 to formally report the loss, which will take effect immediately. Then go to the bank counter to get a replacement card. Bank staff will check the information, re-create and mail a new card after confirmation, and charge a certain card replacement fee. The new card will be sent to the original mailing address together with the new card number.