Domestic voilence

Hello sir, i am a 23 year girl and i am pursuing graduation and its my 3rd year. My brother beated me heniously in a drunken state and its 2nd time he beated me for a only simple problem that i talking to a boy. Talking to a boy its not a crime then he beated me. My brother abuses me in a very cheap manner. My father i getting old , he is of 75 year old and my mother also above 60. My brother used to talk with my father in a bully way and made himself dominant over my father. Sir , the matter is i like someone but i don't want to marry this time because i want to make my carrer but my brother thinking is very cheap. My brother think that i fled away from my house and make them shameful like a so called cheap mentality. But this is not actuality. Sir if i stay in my house they make me married to someone else forcefully. Please help me to get rid out of this . I don't want to live in my house but if i fled away from my house my brother used to file a missing and kidnapping complain and make bother to all my friends and i don't want this to happen. Sir i talk in my home for a private room they are not agreed upon this. Please sir help me in that how i leave my home voluntarily because i independently handle myself in every aspects by doing job but i don't want to live in my house. My brother used to harras me physically , mentaly and verbally in drunken state. I used to take help from women help center or called upon women helpline but nobody help me. Please sir how i leave my home voluntarily please give me lagal proceeding. I don't want to live in my home as my parents getting old they also helpless and nobody helpme. Is there any way to leave my house voluntarily so that my brother willnot file any case?