I feel you OP, having someone fuck with your living situation is the worst.
During my 2nd houseshare, I hadn't washed my sheets in months due to depression. I have a deviated septum, so I couldn't notice the smell. Keep in mind, I have my own room. My housemate used this as "evidence" that I was using hard drugs, and I got evicted. Also complained about me not cleaning, even though I'm not a slob. He hated me for being NEET. He was a 36 year old engineering student. Ugly, ginger, NCT, NW3, 6'6 gymcel LOL. Had an ugly gook landwhale that he fucked.
One of my current housemates is a woman disgusting landwhale, and she is the biggest cunt I have ever met. Will give me the silent treatment unless it's to complain about me "not cleaning". Keep in mind that I pick up after myself, but don't "deep clean", while she's a complete slob. Freaked out when I moved her laundry, even though she had left it in the machine for a whole day. Engages in domestic violence in the middle of the night with her cuck "husband" who also lives with us. Our landlord won't kick them out. He'll say shit like "oh, she's a girl, she can be moody" and "living with others is challenging, you just have to learn to compromise". I recently sent him a text logically explaining why she's a bad housemate. He immediately shamed me for being NEET. Fucking infuriating. The only reason I'm living here is that my NEET status and health issues prevent me from moving anywhere else