Swiggy — Cancelled the order themselves and are now asking for Cancellation fee for an order I already paid for

Website:

www.swiggy.com

I ordered food worth 530 rupees from swiggy and it was delivered successfully and i paid full in cash.
But because i failed to pick up one call from the valet they cancelled the order on their own and are now demanding me to pay Cancellation Fee for an order that i've already PAID FOR IN FULL BY CASH.

Their customer care is no help what so ever and keeps saying they can't do anything about it

Order ID : [protected]
The Swiggy valet cancelled the order then took full payment as well. This way they can cheat everyone by making them pay the bill multiple times.
This is a very anti customer policy as they cancel the order without even confirming it with the customer first. I want the Cancellation fee revoked.