FINAL Update - water damage and no electricityUpdate 5: I'm actually quite happy. Not with the landlord or letting agent or neighbours because they still don't do anything, but my partner got his tax rebate and this is enough to cover the charges and ALMOST enough to move instantly. We're gonna save up the last few bits we need to move out and then we will move. This could be as soon as next month In the meantime we're still trying to get it fixed by the letting agent but to know we have a solid back-up plan makes me extremely happy!
I'd also like to thank everyone who was so supportive over the last few months and would like to thank everyone who donated towards it. You are all amazingly awesome people and I cannot thank you enough <3
Once we got the moving (or the fix) sorted, I'll make a separate journal about it.
Update 4: Got an email from the letting agency that they will not (or "cannot") attempt to fix it until the neighbours from upstairs give the contracter access to