okay, well, I know how these things are run, so that's that then unless you get Flat 7 on side.
I do understand what you're going through. First flat I bought, I made a mistake because it was old and impossible to heat - the appeal was that it wasn't a shoebox like everything else I could afford - and it was also a shared freehold run in the same way. I was a director and it was the most thankless and pointless task imaginable, so being honest, I do have sympathy for them if they cba to change anything.
one of many reasons I moved - into a shoebox, which horrified my late father because he believes in the property ladder - was that it was a leasehold, so now someone else issues the orders about what's done and no one can complain to me about it! When me and the other director moved on, we couldn't get anyone to take the task on, funnily enough.
I have depression and anxiety and I really struggled with the cold, the fact of having to negotiate for every small thing to be done etc. So I do know how you feel.
I wouldn't take it too seriously when feedback is "management charges are too high". What are they like compared to others in your area? I've got neighbours in my block trying to sell at the moment and Brexit uncertainty seems to be a big thing.
the gas meter sounds like something to be sorted with the gas company. I would add a stick on light, the battery operated ones.
I know it feels incredibly overwhelming when you have D&A, can you get a friend or family member to help out re that and shower rail and curtain and so on?