Why did I receive this message for no reason? I obviously didn't save money.

This information is false. This is because you filled in your phone number somewhere and it was revealed to them, or they sent it directly to many users in the form of mass mail. Don't worry, you didn't spend money and the bank card won't deduct your money. . . Two days ago, my mobile phone card 2 received a message from the bank that I had points to redeem, but my card 2 was not bound with any bank card at all. . . I knew at once that it was false.