If your phone number is handled through an ID card, you can definitely find it, but now it seems that you need an ID card to handle a calling card.

And if you don't answer the phone, he will check your personal information to find your parents' phone number, or your relatives, colleagues and so on.

So the best way is to answer the phone and communicate with the staff in charge of your case. They just want money.

I hope you can adopt it. Thank you.