[Resolved]  Book My Yatra — Refund my money

I booked a flight for 3 person from Ranchi to New Delhi on 28th Feb 2020. Yatra reference number was[protected] and the boarding date was 25th April 2020. Due to Covid19 cases flight was automatically cancelled. I chat with them many times for refund but they always say within 24.48 hrs your refund will be processed. Still i didn't receive my money nor any message from them. What should i do ?
Amount is INR 8305