Full and final amount not paid

Dear Sir,

I was working with a Delhi based company named by SHIVANSH SOLUTIONS PVT LTD. and resigned on 19.8.2016 and against 2 month notice period , i had served 1 month notice period and my employer agreed to deduct amount for one month remaning notice period from my F & F amount and accepted the resignantion.

Now it has been one year and mentioned employer is not willing to pay full final settlment amount even the amount what they have mentioned in F&F sheet had been agreed by both the parties and there is no reason to hold the payment.

Because they requested me that they are going through financial crisis so i also did not pressurize them to clear the dues but now they have stopped to reply to my mails and i came to know they are extending their business operations which means they have funds still they are not ready to clear my dues.

Please suggest what appropriate legal action can be taken against them. I have appointment letter with me and F7F sheet also signed by HR of the company who is still working with them.

Thanks

Regards,

Vikal Kumar