Once an abnormal transaction occurs on a credit card, immediately contact the bank to freeze the card. During communication with the bank, you can ask the bank to assist in checking the actual transaction location of the transaction, and then wait for the bank's investigation results. Of course, don't forget Call the police immediately, and the police will intervene to verify. Regarding the transaction text messages you mentioned, generally normal transactions of greater than or equal to the equivalent of RMB 500 and above will be notified by text messages. If it is other transactions, such as online transactions, an SMS verification code will be sent to you when the transaction occurs. Mobile phone, can you recall whether you have received similar text messages recently?