Will there be a text message after the credit card is cancelled?

From personal experience, there is no.

It seems that CCB's credit card was cancelled last year. Whether the cancellation is successful depends on what the customer service said on the phone. If successful, there will be no SMS notification afterwards.

Pay off the money on the card before cancellation, and then call the customer service hotline. The general customer service will tell you that if there is no arrears within 45 days, even if the account is officially closed, you can wait for 45 days to check the account. If there is still no arrears, don't worry, so the card is officially cancelled and needs to be cut and destroyed by yourself.