What are the legal cases of blocking the keyhole to urge and refuse to pay the property fee?

Refusing to pay the property fee is against the property regulations and illegal. If you are sure that the property management company has blocked the keyhole. Better have proof. Post-alarm processing. If you are not satisfied with the property service, you can seek help from the street office of the industry Committee. Or complain to the property section of the Housing and Construction Bureau. You can also sue the property company for failing to perform the obligations stipulated in the contract according to law. But this cannot be a reason not to pay property fees.