With this kind of neighbours your willingness to comply with their unwarrented demands and brazen behaviour will always backfire.Because I was trying to prevent all of this from happening. I did what they asked because I was trying to be a nice neighbor. None of it helped or worked. I lived next to neighbors on the other side that were worse than these people for 26 years, and I feel more threatened by the drunk.
And just because the neighbour on the other side was even worse, does not make it any better.
I am really sorry that you feel trapped in this situation, but I think your best bet would be to stand up for yourself and put them in their place. Just draw the line and in case they are not willing to accept their own responsibilities and boundaries, you can always engage the authorities.