Swiggy — Refund not initiated against food non delivery.

I had ordered food from swigyy on 2nd Nov 2020. The order was not delivered as it was spilled by delivery person on the way.
The cost break up was
Food value 249
Packaging charge 7
Delivery fee 30
Taxes 9.07
A coupon of 75 was adjusted to total and i had made payment of 220.
Now they have added a coupon of 220 for non delivery which makes me pay for the same above product at 295.They are forfieting 75 .

When the food was not delivered a customer guy called me proactively and informed me whether i want to get refund or replacement . I choose for replacement and he informed and replacement is not possible immediately added a coupon. His voice was not clear that i infomrmed him during call. Before i could confirm the coupon the call was disconnected.

Firstly, when i checked the details they are giving me refund of 220 with 30 days validity which is my actual money. As i am not frequent swiggy user the entire amont will be forfieted i am afraid.

Secondly, i connected with customer care executive Tejas over chat requested him to initiate refund to actual source and remove the coupon. He informed me it will be removed in 4-5 hours and refund will be initiated in couple of days. I did ask from him what is the confirmation that refund is being initiated he informed me the orederid is reference id. Today when i checked the refund was not initiated and customer care executive denied to make the adjustment as it has pasaed 24 hours. So they are forcing me to use coupon for the mistakes they have done.
They failed delivery.
They failed replacement.
They deliberately or mistakenly had not initiated refund. They palyed with customer trust.
They are restricting validity to my hard earned money for 30 days.

I want refund of the amount to actual source.