I've name changed so as not to out myself.
I live in a rented property. There have been problems on and off with the shower. The landlord fixes it but It always goes again within a few months and it's annoying. The landlord tells me to use the shower in the main bathroom (over the bath) until he comes to fix it, but I hate that shower - it has mixer taps and the pressures not as good. I pay my rent on time and feel that I should be able to have access to the facilities advertised at all times - that's what I'm paying for!
I was moaning about it to a friend, who said her DH would come and look at it (he's a handyman and does bits of all sorts - plumbing, electrics etc). It didn't need fixing at that time but he came round with my friend one eve for dinner and so went to see what the problem could be. He said he thought he knew what it was and set about fixing it permanently, but the next day it was completely broken. The landlord couldn't fix it this time. A plumber was sent out who said it all needs to be replaced as someone has broken a pipe - he said someone has had to use some force to do the damage that has occurred. It's going to cost a lot of money to fix and the whole shower unit needs replacing.
The landlord argued with the plumber that it was not possible as he hadn't touched the pipes, and asked me if I had. I said no 
. My friend says her DH wouldn't have broken it and there must have been a crack already that just got worse when he tried to fix it, but I don't know.
To be fair, if it had been fixed properly in the first place, I wouldn't have messed with it! Also, I have little disposable income, whereas landlord probably has insurance to cover it, so I feel that I should keep quiet. I do feel a bit bad though...
AIBU (and if I am, what would you do - honestly - in the same situation)