Abusive household

I'm at a loss of what to do here, and it scares me after recent times. I'm 16, living in Central New York, and am in what everybody calls an abusive household. My mother is frequently verbally abusive whether it be just calling me and my brother names, or refusing to let me see the people who help me cope. My now ex, as of last week, has seen it all. He keeps telling me to either get my father involved, which I'm not sure I can even do because I'm pretty sure he supports her, or get a general case going that will get me out. It's taken a toll on my mental health ever since she cancelled therapy for me all because she didnt want to pay an $80 no show fee when she didnt take me. It's gotten to a point where I can't eat, sleep, or stay focused in school. I just want to sleep all day and it's not getting better. I'm scared of what she, my father, or my family would do if I take any action.

I don't know what to do, and any advice would be tremendously helpful, thank you