1) Indian contract act:- As you have done the work for them, they are liable to pay you the consideration. For this enter a civil suit.
2) Payment of wages act and shops & establishment act:- Contact area labour inspector for getting full payment.
3) If any statutory payment like PF, ESI is no made. Kindly contact specific department. See below for eligibility.
Employee's Covered under ESI Act, 1948 | Indian Labour Laws & Shram Suvidha Simplified
How To Download UAN Card or Universal Account Number Card | Indian Labour Laws & Shram Suvidha Simplified
But it you do not want to challenge the termination, but remain satisfied with dues and full and final settlement, then defending on the nature of your duties, nature of company with strength, your tenure of service and amount of last drawn wages, you can get your outstanding dues.
Please note that you cannot challenge termination of service and F&F settlement at the same time. Only if you accept the termination, you will be able to ask for F&F settlement.