My toxic ex threatening me to the core

Hi sir , I am pursuing my bachelors and during my third year i falled in love with a guy from jammu and kashmir . he proposed me and i accepted thinking he is a nice guy starting he was so good with words praising me and he is so introvert thats what i saw but later after getting to know him . He lied about his family, education he made like he is a rich kid so that i will fall for him harder but i know he is not . he told he is not having any side girls but he was on contact later He misused me physically . Many times forced for sex too made me to accept it . He was so clever made me to take combine pictures with him so that if any problem later he can blame me. When i got to know about him I called off my relationship but he often comes to my home and disturbs my family and myself even when i complained to my college as he is from aicte scholarship student they are supportive to him and they took my phone recovered my pictures which was private for me within four walls and saw my pictures they back fired on me marking me as a characterless and now he lies to me that he saved me from that problem but he is the reason why i got caught. later he sended pictures which was fake as he cut his hands so my family went to see him in his mansion and after finding out he faked his hand cut my mom got angry and slapped him and warned him and asked him to make a video and hand written copy that he should not come in my life that day he said ok to my parents and after three days he again wrote three page letter mentioning all my details ,my friends my family and wrote we mentally torchered him we physically torchered him and wrote the consent . and he is going to suicide and he planned to ruin my life . I am so stuck i cant even concentrate on my studies due to his torcher . My parents are also patients not so healthy they are scared that if we go to police it wil be against me . But there is no end to this , His family mom and dad never know about this especially his sister is the main reason behind this she also joins him and play with him by torchering me and my family . always telling he is admitted in hospital he is not well and continously physically and mentally torchering me . Now my parents and myself are sick because of him , I have no one to share this with please provide me a solution . I am just 22 years i want a justice to me . I am abused many times in public transport and college and many area of him keeping hands on my genetical parts . He literally never leaves me to sleep peacefully . Please I want justice for me .