Don’t tell them.

When facing debt collection, you only need to tell them your situation. There is no need to tell them anything else, especially when it comes to your address. If they need it, you can ask them to call you officially.

If a credit card is overdue, you may come to collect the credit card, but only when the credit card debtor's overdue situation is very serious, the credit card debtor will be collected by the card-issuing bank.