Mobile world — not giving back the refund

Address:

Thane, Maharashtra, 421301

This fraud person sells mobile phones and accories in cash on delivery also but gives fake one insted of the original and then dose not returns it and also do not refund the money back he has frauded many people on instagram by advertizing and is a criminal
I request to please help me out from here because he had took my 36500 which is not a small ammoun.