Is it useful to complain about moving to Ministry of Industry and Information Technology?

Yes According to the process: you should complain at China Mobile/China Unicom/China Telecom first, and then go to the Ministry of Industry and Information Technology to complain if the operator can't solve it well. Baidu Search: Complaints from the Ministry of Industry and Information Technology-Fill in the complaint materials online, and there will be SMS reminders in 2-3 days (accepted). After the Ministry of Industry and Information Technology accepts it, telecom operators will follow up soon. A week ago, I complained to China Telecom, exaggerating the publicity on the gift fee. After the Ministry of Industry and Information Technology accepted it, Telecom quickly followed up and handled it properly. The efficiency of the Ministry of Industry and Information Technology is very high, not bad!