The counter staff will not accept credit card business that is not the cardholder's. However, you can ask the staff where there is a place where you can swipe your card for repayment. There are usually devices like POS machines. If you don't understand the operation, you can ask the staff. The staff knows how to do it in one go. It’s very simple. You can just swipe your debit card to pay back the credit card. This is how I always pay back the money, and it’s convenient and trouble-free without having to withdraw cash.