Married by force how can I get divorce

I got force married in 2013. I fighted to cancel the engagement before marriage but they ( My parrent and my wife;s parrent ) played game and created fear in my mind. Emotionally i felt like mental and got marriage. last year i left the job and went away from my home. but due to fearness i came back. Then i requetsed every one to please leave me. But police gave me serious warning to continue this marriage life. My wife has the polce support also..but i mentally struggling like anything. i consulted lawars for divorce but they told me that... i dont have any proofs to file a case.