In your friend's situation, it is a bit troublesome to freeze his credit card and prevent him from applying for it again:

There are several ways to freeze his credit card:

If he fails to repay multiple times, or if he fails to repay for more than 90 days, his credit card will be frozen by the bank, but it will affect his personal credit, he will be blacklisted, and he will be rejected for future bank loans;

If you are suspected of cashing out, the card will be frozen by the bank; if you really want him to be unable to use it, then cash out on purpose;

Although the above two methods can achieve the purpose of freezing the credit card, they all have sequelae. As a last resort, don't do this. It is recommended that you find a way to do some ideological work on him and let him know the consequences of an overdraft on a credit card that exceeds his repayment capacity! Only by letting him agree with it from the bottom of his heart can this problem be completely solved.