About divorce querry

I m Jasmin.i did court marriage to a person named mukesh Parmar who is m.e. Computer by qualification and worked as a assistant professor in Gandhinagar institute of technology.i know his family since last 2/3 years but not that much.First his sister made me her friend and he made his impression so gud at his surrounding. College and to near n dearers.so I trusted him and when her sister made proposal for marriage I accepted.I and mukesh did a meeting as in all Indian societies did formality before marriage..we just chatted..n then on 11 July we did court marriage.. then after both side families gave function for it.But as soon as I be his wife he always scared me, even he did tantric vidhya(black magic) by a person who is sarpanch of Soja village. Gujarat.N I was threatened by saying that if you told this to anyone your mother will be died. And I never seen such a rituals before. So I scared of it. Then after he and his older sister started abuse me.they harassed me mentally much.. by profession I am tutor so they started to force me to stop doing my work. Even after my marriage they both not allowed me to go to my parents house which is very nearer..just 5/7 minute walking distance. Not allowed to talk with any neighbours, relatives or friends also. Even they forced me to teach students at home. At first I did not understand them what they tried to do.. but day by day they abused me more and more.. so after some time when I returned to my home and remember all I found that that mukesh already told me that he was suffering from azoospermia indirectly.. but now I know he z not a man. He cheated me by not clearing his physical condition before marriage. So I am at my parents house since last 3 month.N nobody knows dat he is like that. Because he did the drama to find a girl for marriage since last 6/7 years.He is in fault still he tried to threatened me.When I was at his home since July to september he never with me not in day or night.i objected 2/3 times but he said I checked you for 6 month. At that time I did not understand .. and 2/3 times he and his sister rajshree parmar who is 46 year old unmarried and called herself Natalie asked me about my earning, check book ATM cards. Even though I am at my parents house they threatened me 3 times.. I am from decent family and we never find cheating like this .. so please guide me regarding this and what can I do for my further life coz I am 38 years old and it is my first marriage.. I have no much choice in life at this age after this incident. My future is found dark.. please tell me what to do?