divorce on the basis of impotency

I am 29 years old girl. I got married on 29 jan 2016(social)/27 nov 2015(registry) with a guy. We are from west bengal but he lives in chennai for work purpose. After marriage i shifted to chennai with him. After marriage i was diagnosed with TB(Tubercular lymphadenitis) And in these 3 years of our marriage we didnt had intercourse even once. He use to make excuses of my medication for not getting intimate. While non of the doctor had advised for not getting intimate. After 2 years on marriage i started sharing this with my friends and colleagues. Then i realised the fact that it is not normal. A man can never control himself. 3 years and still virgin... its quite unusual. And still for the fear of getting infection there are protections available in market. Then i started asking him for the treatment but then he makes silly excuses. I couldnt share this with my parents and relatives. On nov 2018 i told everything to my parents. After this he got ready to go to a s*xologist. We went there and then doctor suggested a test, so that according to that he will continue the treatment. But my husband didnot want test. Makes excuses. I even told him that do the test and the treatment and if it comes negative then also i am with you. But still he is not ready for the test. After so much of trying when i failed, i came back to my parents in kolkata. And also apart from this he raised his hands on me 2 times. 1st time he kept a knife on my neck and said that he will kill me and second time in this oct he beat me so hard that i couldnt move my hands for 3 days. Also one ay i accidently touched his ph and saw the msgs his father had sent him asking him to "tight" me, to talk with temper. I got very depressed on seeing all these. And i am staying here from the past one month and in this one month i didnt even got a single msg or call from his side. I want to file a case against him on the basis of physical and mental abuse but it will be time consuming. After 3 years of marriage can i file a divorce case against him on the basis of impotency?