Hi there I'm going through the exact same thing as you infact I want to move out of my home of 16 years because of it. The noise had got my anxiety through the roof if its not them constantly shouting and swearing its the loud music and parties.
These people actually tipped my planters out onto my steps last year, the steps are adapted as I'm disabled, then to top it off I had a call from my housing place asking me if I'd had a party that weekend!!! She said she knows my conditions but has to ask!!!
You only ever got one chance here before now it's a do whatever you want attitude. Apparently they are trying to get them evicted and are gathering evidence, this is the housing association who own the house, er what about the police attending every other week? Also there is a young child living there.
Sorry rant over bit it really affects me as I'm practically housebound and now I can't even enjoy the garden. Yes I feel intimidated as I can't defend myself because of my conditions and yes this makes me feel like less of a mother who can't fight for my children to not have to listen to this foul language daily but then I think if I did shout or I did act violently then they've won, I would be no better than them and we are the better person for not acting this way.
Gather as much info as you can and if needs be send it anonymously to whoever owns that property, I am it's so unfair.
Good luck and try and ignore as much as you possibly can that's the attitude I'm so desperately trying to adopt to stop the rage inside me.
Keep us informed and remember they ain't worth getting into trouble over
Take care
J