Delhivery — Shipment delayed from past 4 to 5 days

I have ordered for the shipment of a parcel from 5th december, 2024. The app told that it will be delivered within 4 days. The next day a message popped up from their end that agent was assigned and he will pickup the parcel. I didn't get any call from the agent.
Later on the same day I got the message that it was cancelled and the parcel will be picked up next. This is repeating from past 4 to 5 days.
When I am trying to reach out the customer care number it is stating as " Error while reaching out"
So I thought of cancelling the order but it is not getting cancelled too.
I have raised a case there is no response also. The service is not at all good. I want my refund back due to the delayed delivery.

Please take necessary action on this.

AWB number of the delivery is: #[protected]