There is no need to cancel a card that has not been opened, because there is no annual fee if his credit card has not been opened. At the same time, if the landlord needs to use it again in the future, it is ok to open it within the validity period of the card (the validity period of the card is on the front of the card, at the lower right of the card number, with four numbers, one of which is in the form of "month/year". For example, if it is written as 12/ 18, it means that it is stuck at 18. After the expiration date, the card will be invalid, and you will not be replaced if you don't open the bank. )

If you swipe the two cards that have been opened, you should pay back the money according to the card number. It is not clear whether the landlord has a savings card at home. If there is, the savings card can be bound to the credit card. When the credit card is due for repayment, as long as there is enough money in the savings card, the credit card can be deducted smoothly.

If not, because as far as I know, most CCB cards can be free of charge if they are swiped a certain number of times (unlimited amount) (his ordinary cards and gold cards can be free of charge every year, and platinum cards are 10). Except for special types of cards, such as car cards, the annual fee of 200 is inevitable, but this card has good service, car wash discount, free road rescue, and the annual fee is worth it. Therefore, it is also suggested that the landlord can choose one card and reserve it after the number of transactions is full, and usually use another card, so that one card can repay the loan.

If the landlord still finds it troublesome, he can call his home service hotline, cancel one of the two cards that have been opened, and keep the one that is often used, so that returning money is also a card.