Ah wouldn't life be nice if our neighbors were always nice and normal...? My first neighbor (as a young married) turned out to be schizophrenic and had my butt going crazy trying to "protect" her from the enemies that she "knew" lurked in the apartment complex...I was so young...so dumb...lol...but now...you're just dealing with a plain old A ss H ole..and it's got you down....My Advice?.....Is the same as the training I received from the hotel industry in handling customer complaints....NEVER GO TO THEIR LEVEL....It's what they expect and what they want......Baffle them by maintaining a controlled and polite demeanor no matter what they dish out....And You will greatly enjoy their discomfort and confusion.....love grace