I feel for you...
Let it out.
I'll spill the beans on a mad ex-landlady (not the one I'm currently fuming about) who literally went through our outside bins and told us off for putting food waste in...er...the bin designed for food waste. She then complained we hadn't cleaned the inside of the bins (not the ones in the house, the big council-owned wheelie bins outside, which were unsurprisingly full of stuff as we were moving out) when we left.
It's hard to pick her piece de resistance, from failing to give us a gas safety check for about 4 years, to sending round an unqualified mate to poke at the boiler when we complained we smelt gas, to lying about it after we moved out and getting a crooked gasman to retrospectively write 4 (fake) gas safety certificates for those years because she was worried she was going to be prosecuted!
Same mad landlady also rang us up when we were literally in the process of moving out, to discuss carpet cleaning. When I said I couldn't talk as I literally had the removal men there, she said 'No you don't, I've just driven past your house.'
When I offered to put the extremely present and real removal men on the phone to prove that yes, they really were there, she declined.
Absolutely barking.
Same lovely lady lived in a multi-million pound house. We once had reason to go round there, can't recall why, when our house was down to one floor only for about two weeks, due to a flood from a leaking pipe under the floorboards, which soaked the kitchen and utility while we were on holiday. As a result, the contents of the kitchen and utility had to be put in the lounge for two weeks while they were being redecorated. So we had no access to a lounge, cooker, fridge etc for two weeks. She complained about us taking up her time at this particular point when all 5 of us were marooned upstairs with no kitchen or lounge access at all, BECAUSE SHE WAS BUSY GETTING READY FOR A BIG DINNER PARTY. The lack of empathy or responsibility was quite breathtaking.
We enjoyed taking every penny of our deposit back off her when we moved out (she had of course claimed the lot - unaware that the law had recently changed so that she couldn't just now grab it without proof, and the TDS were having none of it).
Special place for people like you, Jan. I've not forgotten.