1. Complain to the Bureau of Letters and Calls. The petition department is responsible for receiving all complaints and then forwarding them to other relevant departments.

2. Call the city/county hotline to complain. Every city should have a city/county hotline and a city/county mailbox, which is responsible for accepting all kinds of complaints from citizens, and the city/county government is responsible for distributing complaints.

3. Complain to the management department of the gas company. If it is the problem of individual employees of the gas company, it is recommended to complain directly to the management department of the gas company. If the problem cannot be solved, consider other methods.

4. Call 123 15 for consumer protection complaints.