What should I do if I am blackmailed by community security?

First of all, the property has no right to deal with dogs. Of course, there is no right to a fine. They can report the case to the police. Go deal with it. To be more reasonable, you still have to exchange stocks for dogs.

Besides, if you pay the electricity bill on time, they have no reason to stop your electricity.

I think housing is still the key to success. If you are scared every day, you will lose more than you gain. I suggest you buy a dog first, or give it to your friends if you like. Then move to another block. Of course, the property fee is not given at all.