My credit card is overdue, but Mongolia Commercial Bank will not make installments. The third party keeps calling me to sue. Can I complain?

Yes. If a third-party debt collector is rude during the debt collection process, or even harasses your family, friends, etc., this is obviously violent debt collection, and you can file a complaint if you have evidence. You can directly call the card issuing bank to complain to the bank. If the bank does not care, you can complain through the China Banking and Insurance Regulatory Commission, Ju Complaints and other channels. When making a complaint, you must provide evidence of the other party's violent collection, such as the audio and video you recorded during collection.