First, if it is a dual-currency credit card, the transaction details may be in a foreign currency account, and the cardholder only inquires about the RMB account details, so he can't inquire about the transaction details.

Second, the payment is not accounted for, but is in a pre-authorization state. Pre-authorization will occupy the card limit, but it is not found in the details. Before inquiring, you need to explain this transaction.