According to Caijing. Com, query means refund. Credit card transaction cancellation refers to the refund operation when you feel that you want a refund or the transaction is abnormal after credit card consumption. Credit card transaction cancellation Apply to credit card customer service for transaction cancellation after the transaction is completed. Some types of consumption cannot be cancelled, and the credit card transaction will be refunded to the account about five working days after cancellation. So the cancellation of credit card transactions means a refund.