What should I do if I am blacklisted by Unicom?

Users who are blacklisted by China Unicom are generally because the Unicom number registered with their ID card has not been paid off, and the blacklist can be lifted by paying off the arrears through the business hall. Blacklist users include the following three types: users who have closed their accounts for three months in arrears and users who have not closed their accounts. Malicious arrears users, such as users who maliciously defraud international information stations and users who maliciously defraud roaming charges in different places. Users suspected of short message fraud, fraud and other criminal acts identified by public security organs. If you need to check whether my ID card is on Unicom's blacklist, you can call the customer service hotline at home or bring your valid ID card to the local business hall for consultation.