Air India — Refund of Rs 39,081 not issued since 10 months

I am writing this on behalf of my aunt who had booked air India flight bearing Ticket id[protected] from Amritsar to Birmingham on March 19, 2021. This flight was cancelled from airlines end and I was told that the refund would be credited in a month. Despite repeated calls to them and after escalating the matter everytime, I haven’t received refund yet and it’s been 10 months now. I would have earned good interest for this amount but I’m at all because of incompetency of their staff. I request an immediate probe into this as it just looks like they are running a scam ..