1. You can complain directly to the industrial and commercial department, call the consumer complaint hotline, or go to the Housing and Urban-Rural Development Bureau.

2. For a property management company, the owner can complain to the real estate administrative department of the local people's government at or above the county level where the property is located, or complain to the property head office, or change the property company according to the Property Management Regulations promulgated by the State Council.

3. The owners still can't solve the problem of "property rights protection" through third-party negotiation and mediation, but they can protect their rights through administrative channels.