The postal credit card has been cancelled and needs written proof. What should I do?
if the credit card is cancelled, it can't be used. Why do you need this certificate? * I can go to the post office and ask, if you handled it at the counter, you should have it, but you may have lost it, so go to the post office and ask if you can open a certificate, or you can go to the People's Bank to get your own credit certificate, and you can see all the cards you have handled.