You start playing dirty tricks on the neighbours to get your own back. At 7 am you play loud music to wake them, you warm up their milk after it has been delivered to their doorstep so that it goes sour, you light a bonfire when the wind is in the right direction to send the smoke through their windows and so on.
They respond by doing the same kind of thing to you. Unfortunately, they are a lot better at it than you are. This strategy is not working.
Form a neighbourhood group and threaten violence if they don't stop