Railrestro — Food order not delivered and yet refund not credited

It's a very bad experience we had with food order through RailRestro. We were waiting for the food till late evening and at the end it was not delivered and no update sent on the status of the delivery.
Later they said they will initiate a refund. It's been almost 2 weeks and I called multiple times but refund not credited.
I want the necessary action to be taken on this.

Order no. #2843637
Order date - 27/09/2023