I've had neighbor issues where they (anonymously) invoked the power of the (local) state to harass me for pushing 30 years now. In the last few years it became completely obvious just who it is. I had to go to court to get the popos straightened out on just what the law is (fortunately the judge seemed to follow the law and US Constitution) and am now working to educate the perps. It's a hassle, but now that I am temporarily retired, I have the time to pursue my legal rights without great expense.
In your case, it'd be good to read the local, state and federal ordinances/laws/bureaucratic pronouncements. My experience to date indicates that it is difficult to obtain more Justice than one is willing to pay for. It's best to stay away from the legal system as much as possible. Having the written law on your side is a plus though.