How to get divorse from wife,she is not agree

Iam an indian airforce employee,I married 2 yrs back .My wife has made my life miserable. There have been several heated arguments and at times she went to her parents house for up to 8 months and exerted pressure on us to come and take her back else they will register dowry harassment and domestic violence cases against us. and then we are blackmailed that if her wishes are not fulfilled she will put us behind the bars by registering the false cases of domestic violence and dowry harassment.I had no intentions to expand the family but she provoked me to get physical and when the next day I told to take ipill I don’t want to expand the family. She said ok to it and the very next day, she said 'congrats, we are blessed with a baby'. When I enquired about the status of ipill, she said she flushed it in the toilet. Am I legally bound to take up the responsibility of the child when there was no consent for expanding the family. Though on human grounds, the baby is in my house, i will not give her a fatherly affection as it is an insult to my self respect. Recently she hatched a conspiracy with her parents and they went to my house and warned my parents that they will file cases . with an allegations that my parents are continuously harassing her for failing to meet the dowry demands and she is physically tortured". When I questioned her on the authenticity of her allegations, her father said "I have 3 illegal relationships do what you want and what you can " this is just the beginning when the matter moves to court there will be more n more lies. Relations can not be improved forcefully that too when the person levies false allegations and harass my parents unnecessarily. I am totally disturbed and not able to take a normal sleep. I just woke up at 2:30 am and searching the web for some help Is there no hope of life for the poor husband? or they bound to suffer at the hands of wife and in-laws? and wait for the death to relieve them of all the pains. Please advice.