You have mentioned they have terminated your services. For any employer, there should be an authorized reason to terminate an employee, and the same has to be communicated to the employee in writing or via email.
Forfeiture of Gratuity:
(Sec 4) (6) The gratuity of an employee, whose services have been terminated for any act, willful omission, or negligence causing any damage to the property belonging to the employer, shall be forfeited to the extent of the damage or loss caused. The gratuity payable to an employee shall be wholly forfeited if the services of such an employee have been terminated for (1) his riotous or disorderly conduct or any other act of violence on his part or (b) any act which constitutes an offense involving moral turpitude, provided that such an offense is committed by him in the course of his employment.
Thus, the law provides for the forfeiture of the gratuity in case of employee misconduct. Depending on the nature of the misconduct, sometimes complete forfeiture results, and at other times only partial forfeiture results.
Controlling Authority: If an employer is not paying gratuity without showing any authorized reason for termination, you can make an application to the Controlling Authority. Upon receipt of the application from you, they issue a certificate for the gratuity amount to the Collector. The Collector shall recover the amount as arrears of revenue together with compound interest at the rate of 9% p.a from the date of expiry of the prescribed time and pay the same to the employee entitled thereto.
First, speak to the right person/HR Dept, get to know the exact reason for termination. If you find no valid reason, convey the message to HR and ensure things are done smoothly. If not, please approach legally.
Good Luck.