Threat and sexual harassment

I'm Melisa and I've been friendly with a guy named benjamin collaco for 3 years . During the 3years we were not happy and I was always forced into sexual stuff which I was not interested . I always has been threatened when we had an argument saying that he would kill himself because he was in the gulf . And when we used to meet he always used to say he would put (acid on my face) if I break up with him . Now he's been threatening me with some nudes of mine and would also take my face and attach it with some unclothed women and say it is me and spoil my future and talking to all my relatives and friends about me and defamation of my character. I am not able to go to college because of the threats he has given me and also saying he will kidnap me . My life is in danger. He also paid the police men and withdrew the case .He has spoken very vulgar to my mother and me that he wants to have sex with me one last time and after that he would not torture me and clearly said that he will not let me live in peace . He has created a lot of fake accounts on Facebook and instagram and been talking very vulgar and threatening me that he would not let me live in peace . He has been coming to my house early part of the morning and put a voodoo doll in my house even though he knows I have cameras in my house . And in the messages he has sent he has stated that even (if you take action over me by going to the higher authorities nothing will happen to him but he will do more witchcraft and that would make me and my mother mad) He's also he take robbed money from the company where he was working ( khimji Ramdas) Over 3lakhs and he has been sent off .now he sent me a mail about my dads company creating fake reports that his settlement is not fulfilled. And my father just passed away this December 2016 and we have no male member or any family as support for my mum and me . I come to you thinking that you would take action over (benjamin jude collaco , passport number K2809521 ,email ID- benjamin.collaco@gmail.com , house address 25/13 haridass main road Kolathur chennai -600099 ) because I am looking for the safety for my mother and me as we are 2women living alone and for the future because with the threats of WANTING TO PUT ACID ON MY FACE and WANTING TO UPLOAD PICTURES OF ME ON THE INTERNET . I would be grateful if you take up my case Analysing this I didn't want to make a hasty decision and I don't want him to interfere with my life again Pls do take care of this