Domestic violence and threat to life

I am a 16 years old girl and I am suffering from regular domestic violence. My father is a characterless creep who will click my pictures and distribute among his friends and my mother is having multiple affairs. They moved me when i was child to my grandparents where an uncle tried to abuse me. There are multiple cases which I can't illustrate hereNow when i wanted to get help and even tried to get out of this hell, they try to control me and even even physically torture, lock me and even stop my access to internet and calls so that I can’t call the police or the child helpline number. In this regard please help me with the following questions:nCan i stay alone while claiming maintenance from them nIs there any way to make sure they or any of their known people don't try to harass me.If I stay in a government house can i use internet to complete my studies through distance education or any nearby collegesnAfter I turn 18, how soon can I leave such a government home