I pray for god to give you the strength you continue, dear. Please understand that every last one of these people who say you are being unreasonable HAS NO CLUE what they are talking about. ONLY when one has suffered this type of antisocial behaviour can one understand the impact is has on one's life.
I know from long personal experience that you are now living in hell on earth. I'm sorry to say that the authorities will do nothing to help you. Housing associations do not care. If you're with Metropolitan Thames Valley Housing I can assure you they are a criminal organisation. Their policy on antisocial behaviour/noisy neighbours is that slamming doors and windows is normal, every day life noise when, in fact, it is, by definition, a deliberate act intended to be noticed by others. Yet MTVH policy is that this behaviour is perfectly normal and acceptable.
If your local environmental health officers are like mine, they too will be of no help. I was given recording equipment to gather evidence of the noise and at least 3 times was told that the week of noises I had recorded had no worked because of equipment failure. On one occasion installing the equipment one of the two officers said, "What's that red light come on for?" and then, "Oh, it's working now". When they finally got some noises recorded they claimed they were too quiet to consider a statutory nuisance i.e. 'it's perfectly fine, nothing to complain about, you're just a complainer'.
Now for some more encouraging news (but Local Environmental Health officers waited 2 years before they thought to tell me): Your health makes no difference to them when assessing a noise nuisance. Their rules are that they must assess what a healthy person would consider 'too noisy'. Thus, your serious need for peace goes totally ignored by the Environmental health officers (so don't get your hopes up that they will be concerned for your health).
However (this is the more encouraging news), court judges are 'far more considerate' if you take your noisy neighbours to court and you will get results relatively quickly. I fought with my 'gangsta' rapping, drug dealing, whooping neighbour and his trollish friends for over two years before I gave up with the landlord, the police, and Environmental health, and took the guy to court. Within 3 months he was out.
So, please call your local court and explain to them that you want to make a claim for a noise abatement order against your neighbours. They will advise you of the steps you will need to take. It isn't very expensive (and since your life is in the balance, it's worth every penny), just a few pounds up front for administration which you can claim back if you win. You will need evidence which you will also need to copy to the noisy neighbours. In my case, I just used a digital camera (which could make short video recordings and so had an internal microphone) which cost under £50, and the recordings were adequate. You will need to compile a diary of incidents to illustrate the length the disturbance has gone on, the times, dates, nature of noises, and how it made you feel. Sadly, you will have to put up with more of the noise for at least another week to get just 1 week of records (but you could make up an entirely fake diary and supplement it with specifics - it's perfectly fair under the circumstances since this is your life you are fighting for*. Once you get your evidence (and make sure you do whatever you need to to get the best recordings e.g. put the recorder right up against the ceiling if necessary) - and don't forget photographs of the flakes of paint falling - and notify them that you are taking them to court, they may stop (although I doubt they will, sadly. The type who do this are arrogant and selfish and think they are in the right.) Also, sadly, getting the noise abatement order may only be the first step as you may have to put up with them breaching the order and you having to record the evidence of this to get them fined. Once they start getting fined, however, they will begin to get the message although, again sadly, they can ignore fines for months and months until bailiffs are sent after them. I hope and prey that it won't come to this.
Many people will advise you to leave but this is unacceptable given that you are the good neighbour and they are, technically, breaking the law in breaching the peace (it's just that the authorities can't or won't do anything to protect you).
Note that they are also violating your basic human right to enjoy your possessions (in your home) in peace (but again, you won't get anyone to fight your fight for you). I've been through it all. Citizen's Advice will just push leaflets into your hands telling you to go to Environmental Health, your local councillors (who have NO powers of enforcement), etc.
*Anyone who thinks I'm being melodramatic about the seriousness of this problem, consider that I'm speaking from person experience and have spoken to many others who have also experienced this and we all agree that before long life becomes literally intolerable until suicide or murder starts to come to mind. I felt variously homicidal towards my neighbour and suicidal. No one can live under these circumstances. Indeed, when, after 10 months, I retaliated against my neighbour he caved in within one month and had Environmental Health out against me (and they issued me a warning that I would be issued a noise abatement order).
God be with you. Having been through this it is my major life concern of what needs to be changed in this awful country of ours.