1. Call the customer service hotline of the bank to find out the status of the credit card and see if there are any outstanding accounts on your card. Secondly, it's not too late to cancel the account after knowing the bonus points. However, many banks will provide generous gifts when customers apply for cards. In this case, the card cannot be sold casually, and it will take at least half a year.
2. After the card is cancelled, the best way to protect the card is to cut it once and move it twice. Call to confirm whether the card has been cancelled before cutting. It is worth reminding that many banks have record restrictions on card refund users, so it is easy to pass the authentication when applying for the same type of credit card next time.