Hangzhou didn't pay the property fee, and the parking railing didn't open automatically. How to complain?

Hangzhou has not paid the property fee, and the railing of the parking space has not been opened automatically, so I complained to the property management office of Hangzhou Real Estate Administration, the competent department of the property industry. Do a good job before complaining. Don't take the form of oral complaints. Before submitting it in writing, look at the property management agreement signed with the property management company, and the evidence should be full and complete.