No there are no PGD program in social Psychology offered by any college in India. You may get PGD program in Clinical Psychology, Counselling and Guidance, Psychiatric Medicine etc but not in social Psychology.

You may visit the link provided below to know more about the colleges offering PGD courses in Psychology:

https://university.careers360.com/colleges/list-of-pgd-in-psychology-degree-colleges-in-india

I hope this answer helps. All the very best for your future endeavors!