Damn man that's pretty harsh, it is understandable that you feel how you feel. My situation has never been quite like your's I've had some different sorts of problems...some fighting between parents and I am 25 living at home with my mom and her boyfriend who argue a lot but what you describe sounds significantly more unpleasant. I have attempted suicide before so I can relate to that...sometimes worry I really could follow through.

Why cant you see those only people who care? Is there any way to be in contact with them like online or over the phone at least? But yeah sounds like a rough situation nothing I can say will really make it any better.