Threatening me

I'm 20 y/o and persuing under graduate degree and preparing for pg . I've been suffering a lot since my childhood my parents are not just torturing me they crossed every limits . They ask me to be like a IAS and behave like a successful person and the person with responsibilities at this stage and they're asking this and many things like this from the day i realised my existence. They have endless demands and they want return from me for their investments in the age . As per them im a grown up person who can be kicked out of the house legally for not being like this. I have my separate goals and dreams and I have a versatile personality but they always neglect me and see others and compare me. They not just punish me for my mistakes (here the main part comes) , they are beating me till my breath out , till my soul doesn't cry since I was in primary school. They blackmailed me for death and threatened me everytime and they've done it too. My father attempted to kill me multiple times . With a knife and then with a ladhi with mettle rivets but fortunately I survived because they missed and protected myself . They tell me if I do not do what they say they'll kill me so bad and never regret it . And they tried to kill me to. My life is in danger and I don't think so I'll survive for more than couple of months here . He grabbed my neck too , he injured me badly . I wanna live for myself now and fulfill my dreams and wanna do things my way cuz it's my future and career. They do not even give me privacy in any manner. I'm in depression for almost a year now and I cry and I suffer but the fact that my mom doesn't even get me when I'm sad , even when I'm sick she doesn't care now. What I'm facing is exceptional cuz seeing death in front of you is not a small issue. Tell me what should I do because it's not a family issue anymore?