1) you would be entitled to 3 months as per terms of your appointment letter
2) you have not mentioned what is your deisgnation in the company
3) do you fall within defintion of workmen ?
4) if you are workmen you would be entitled to 15 days salary for every year of completed service
5) section 25F of induistrial disputes act provides
No workman employed in an industry who has been in continuous service for not less than one year under an employer, shall be retrenched by the employer until
(a) the workman has been given one month's notice in writing indicating the reasons for retrenchment and the period of notice has expired or the workman has been paid in lieu of such notice wages for the period of the notice:
Provided that no such notice shall be necessary, if the retrenchment is under an agreement which specifies a date for the termination of service;
(b) the workman has been paid, at the time of retrenchment, compensation which shall be equivalent to 15 days' average pay for every completed year of service or any part thereof in excees of six month