Legal Notice from tech mahindra regarding recovery of dues.

I received a legal notice from tech mahindra regarding recovery of dues. They asked me to pay Rs 33410/-. I did not work with tech mahindra for even a single day and did not sign the bond of 2 years period. That's why I left on the joining day itself. I even asked the HR personnel present at the venue that I did not want to sign the bond because If I would have signed the bond I would have to pay them Rs 1 Lakh rupees. Then the HR told me that If you do not sign the bond your employment will be automatically terminated after 7 days.Although before asking this I had already signed the offer letter but I asked them about my leaving the company and they did not mention any money being recovered from me and It was not clearly mentioned in the offer letter about money being recovered from the employee. So I decided to leave the company on joining day itself. Now after 2 years I got a notice from the advocate hired by Tech mahindra to pay Rs 33410/-. The components of the Dues that are to be recovered from me are Basic Salary and its various components. And recovery for not serving notice period. And recovery for not surrendering the ID card. But this card was not the final ID card which we were to get after some time. It was just basic card which said New Joinee and company HQ address it did not have my name or address on It. Please reply how should I go about this situation. I will provide the full and final settlement slip and copy of legal notice and offer letter terms and condition. I contacted tech mahindra's advocate on the same matter and he gave the number of the person who takes care of legal issues in tech mahindra. And he provided me email of HR and write to them. I wrote them explaining my issue but I have not got any reply from them yet.