Swiggy — Smelly raw order from Subway

I called swiggy as the resturant Subway was threatung me to cancel the order due to non COD order, and so i was assured that my irder will be send as per the instructions by me.
I got my order but it was so smelly and all raw, the chiken was so smelly with that sauce.
I reached swiggy customer support and they are really trying to intimidate me .
They are offering refund of 74 rupees.

Instead of listening me, understanding me, they are completly refusing to help me.