Air India — Refund delay - Air India Booking

Hi,
I just booked my tickets from Chicago to New Delhi on Nov 22, 2020 for 1410 dollars. I have mentioned the Eticket number here. I called BudgetAir regarding my refund amount as I cancelled the air ticket. They said that AirIndia is delaying the refund amount for cancellation. I called the Airindia team too and they said that the refund amount is IN PROGRESS. And I have to email del.[protected]@airindia.in to get the status on it.i CALLED MANY TIMES TO CUSTOMER CARE, BUT NOT GETTING PROPER RESPONSE ON MY REFUND.
Eticket Number[protected] (Attached Booking confirmation PDF for ref)

I like to know when I will be getting my refund amount. It's been more than 7 months and this is no making sense to keep my amount without returning back. We are booking in AirINDIA as its reputed Airlines, but this doesn't make sense by not giving my money back.
I like to know an estimated time/date for my refund money. THIS IS NOT FAIR TO KEEP OTHERS MONEY AND NOT GIVING BACK.
Looking forward to your reply.
Arif Jan