Sterling Holidays Resorts — Not Refunding as Promised: 20k stuck from 6+ months. Not responding

On Mar 4, 2020 I made a reservation for Sterling Resorts (Dindi) for 2 days (Apr 10th to 12th, 2020). As the Covid started spreading towards later part in March, I reached out to Sterling and they offered me two options:

1) Cancel the reservation, and get the refund (RS 19, 641/-).
2) Cancel and get a voucher worth the same with 6 months validity.

I chose to cancel, and get the full refund. Sterling promised refund within 90 days, on Mar 26th. Today, it is Oct 6th, 2020 and there is no refund. I reached out to Sterling in multiple different means - they have always kept making false promises that it will be done today or tomorrow. But it is still not done.

Voucher Number: NMWGOD[protected]
Resolution Expected: Refund of 19, 641/- as promised.

These days, they have also stopped responding. I feel cheated, and frustrated. Getting almost 20k rupees stuck with them, is infuriating.. especially when they don't even care to respond or even follow through on their own promises.

As one last step before I file a cheating police case, I am approaching this forum. Hopefully will see some progress.