I've given up

I'm 18 living with ten people. I am the only one who deep cleans and sprays every time I see a bed bug. I slept on a cold concrete floor for two years because I threw out my mattress. My parents can't or rather won't call a exterminator. I'm covered in bites and scars. I'm currently laying on the floor after having another break down thinking about how disgusting I am and how I sleep with bugs crawling all over me. I don't know what to do anymore it's genuinely taken a toll on my mental health.