Travolook — Didn't received refund

Website: www.travolook.in

My father booked an air ticket for Mumbai to Hyderabad on 25/07/2021, as soon as the booking got completed, he received a call from travolook that his ticket has got cancelled due to an internal error and the money will be refunded within 10-15 days. Now, after more than 50 days with multiple complaints and remainders we get the same answer from the company, their customer care executive replies rudely.
Please look into the matter seriously, I think it is a fraud company.