Paytm — Complaint against paytm for selling expired and damaged food product which caused food poisoning in family members

Address:	New Delhi, Delhi, 122017
Website:	Paytm.com

Please guide me where to complain against paytm which has sold a damaged and expired cashew packet causing food poisoning among family members.

I purchased cashew packets from paytm and I have invoice for the same. But the cashews tasted very very bad in taste and smell bad..we felt sick and 2 family members felt stomach ache and fell sick due to food poisoning..
This was reported to paytm and they asked me to send photos, after sharing photos they told me that cashew look fine..and they refused to take Back, change or refund..
The cashews are not consumable but I am looking for help on reporting this matter to food authority of India or other relevant authority as my complaint against paytm.

Can someone please guide me contact no or email where I can send this product for investigation and action against paytm.

My email is [protected]@gmail.com