Gmac 20th centuary fincianal dorporation ltd
Office Address in delhi for NOC of my Vehicle

I have purchased a santro 1999 make the Registration Certificate shows that the the vehicle is HP to GMAC 20th centuary fincianal corporation. I tried every thing to get the office address but i was not able to locate the office in delhi. How can i get a NOC and form 35 from the company.