Vistara — No refund from past 2.5 years

Dear Sir,
I had booked a ticket 2.5 years back, as due to the pandemic, all flights and travel were abandoned by the government.
Almost 2.5 years have passed since this incident, and still, I have not received any refund for my ticket. I have called customer care many times and raised the query still no response.

Please refund my flight ticket along with the interest amount for 2.5 years.

Please resolve my issue as soon as possible, or I have to take the help of the consumer court.

Name of Passenger - Parikshit Limbajirao Gaikwad
Airline PNR - UKRGNZ
Date of Travel - 10 may 2020.

Regards,
Parikshit