Jiomart — Refund not received post multiple follow-up

I have raised multiple times i have not received the refund of 938.5 rupees. I checked with my Bank and they confirmed the ARN number is not processed from the merchant. The customer care has zero clue they just copy paste the message and have not idea how to resolve. I had to tell them to check as the ARN can be processed but doesn't mean the amount is credited.

Refer screenshot for details