@Lindsaycreate I can't add anything to what's already been said but I really do feel sorry for you and I really feel bad for you ... It's horrible when you have got absolutely vile neighbours ... I'm actually fortunate enough to have the most amazing neighbours in the village I live in now (all around me...) Have been here 10 years.
But one property we lived in some 20 years ago (and had lived in happily for 6-7 years with our 2 young kids,) had new neighbours move next door. The previous ones were a couple in their 20s and they were lovely. The NEW neighbours were late 40s, and for some reason thought it was OK to have loud parties in the back garden (and in their house,) once a week, from 6pm til 3am, with over 30 people present.
They also played loud thumping garage music boom boom boom bang bang bang from 7pm til 11:00-11.30pm - 2 or 3 times a week!!! Most of the time they weren't even IN, they were at the pub, or at one of their family member's homes!
They would go out at 7:00 PM to a pub/wine bar/club, or someone's house, and leave the music playing really loudly. No idea why. 5 or 6 hours they'd be out sometimes, with the music booming through the walls.
Our children couldn't sleep and kept crying because of the horrible noise. They even played the music SO loud in the afternoon when they were home that we couldn't hear the TV. I confronted them about it, and she said we'll play our music as loud as we like, it's our fucking home.' She slammed the door and turned the volume up higher. They were vile. They drove us out. Put the house on the market 4-5 months after they moved in, after 7 happy years there. We were devastated.
Didn't ever complain to the council or anything, we just went. A couple in their 70s bought our house. SHE was very feisty and assertive and quite gobby. I hope she gave this couple HELL for their noise. I do suspect that they clashed - as the nuisance neighbour's house went on the market about 6-8 months after we left.
This was my friend's words and not mine ... my friend said... 'these horrible neighbours came from a big sink estate onto a lovely little cul de sac where all the homes were privately owned, after making £70K on their right to buy council house, but they carried on behaving like they lived on the big sink estate ...' Nuff said.
All the best @Lindsaycreate Not much help sorry. All I can suggest is move. Sadly, some people will be on the side of your neighbours because they're elderly, and some people think that people over 70 can never put a foot wrong.