Air India — Air India Refund not received

I booked a flight for my parents on the 21st of March which I had to cancel on call. The agent promised me that I will receive a partial refund for my order.

Since then it has been 6 months and after multiple followups I still haven't received my refund. They claim that the refund has been processed on the 10th of April 2021 but, on one of the calls, their own escalation team member mentioned that the refund is still pending with their refunds team.

He promised a callback in 3 days and a refund in 7 days but none of it happened. I have written to the Chief Vigilance Officer as well but haven't received a response

The ticket details are given below

PNR - J8CRX
Ticket numbers[protected] and[protected]

Support tickets raised on call - 1165524, 11655133 & 11654950. Ticket statuses are currently escalated

Feedback ticket status - Ref No. WB-DBLR[protected]