TRIGER warning⚠️⚠️⚠️ mentions self harm and suicidal thoughts⚠️⚠️⚠️

I think I have finally had enough I'm treated like a child, by my entire F.O.O. I'm basically a scapegoat, or at least that's how it seems, it's as if I'm the family project, everything is my fault, and it keeps the focus off stuff that should really be addressed. My question is, how do you finally know when enough is enough? I'm blind since birth, and have always been treated differently, my siblings are only half siblings, which I didn't find out till I was 22, and only then because it was a necessity, I have never been told who my eio dad was, only that 'he was on the wrong side of the law' my mental health struggles have never been understood, I'm labeled as ungrateful and just this past weekend, again, told by both mom and sister, that my attitude is disgusting, I don't like hearing the truth, etc. This after they came to my apartment dispite me asking them not to, complaining the entire time they were here about my cat, my sister treating my house like a disease, not letting my little niece sit on chairs etc because of cat hair, and treating the cat balls like they were infected.... I know they are waiting on me to apologise, but I honestly just do not want to talk to them, I feel so sh*t and trapped by the whole situation.... they came to ...Clean... to 'help' and just spent the entire time telling me all I was doing wrong, I need to decide if I'm keeping my cat, and on and on.... Thoughts? Advice? Should I really be apologising for such a major invasion of privacy???? Last time I felt this bad, it was after they visited, me when I lived abroad, after I had been ith hospital for mental health, which they were really angry at me for, and I felt so bad after that visit that when they left I self-harmed I haven't done that this time, but have been having suicidal thoughts since this all went down, I just can't see a point. I am on antidepressants, so they are probably keeping the worst of the amotions at bay, but I am feeling pretty hopeless ATM.