If you are the victim you can file a complaint with Labour Inspector of your office jurisdiction with all proofs.
How come the company terminated you without any written letter ? What was your position with the Company. You haven't provided clear details.
I hope you are trying to say company mentally harassed and forced you to resign ? If you had already submitted resignation letter voluntarily then it would be tough to prove with Labour Office.
From India, Madras
Having worked for 4 years and six months, the applicability of Payment of Gratuity Act should also be explored. since the issue is in Tamil Nadu and we have a ruing by Madras High Court in Mettur Bearsel's case that employee who has worked for 240 days in the fifth year is entitled to get gratuity, the act of the employer asking you to go should be viewed as an attempt to avoid payment of gratuity. If you have decided to go, then you should ask them to compensate the loss of gratuity also.
From India, Kannur