Ugh. It's neighbours like yours that make one almost glad for the quiet neighbour who has a large freezer (see Speed Racer's avatar
). Especially if the quiet neighbour has a habit of quietly refrigerating troublemakers (yes, I'm joking - maybe!).
My parents are artists and have had years and years of grief from neighbours in the places they've lived - from people complaining that my dad's hand-carving is too noisy, to us being reported for not being in school (we were homeschooled perfectly legitimately and they knew it). I've seen more ugly battles across fences than I have fingers on my hand and my parents won out every time. How? They outlasted them.
They also played lots of Greek bouzouki music
Good luck, get the horse and practice passive resistance!