Cleartrip.com — Flight ticket refund

Address:	India
Website:	cleartrip.com

I booked a flight ticket of Alliance Air from Guwahati to Kolkata on 13 August 2023 at 00:48 hours through Cleartrip.com. Th booking ID was[protected]. The flight was scheduled for 13th August 2023 at 20:15 hours. But after I paid for the ticket, I got a message from Cleartrip.com informing me that my booking could not be completed. They said they have initiated a refund and the money will be credited to my account in 5-7 working days. I went on to book another ticket through another airlines. Now, at 16:15 hours on 13 August 2023 I got a message from Alliance Air that sent me my PNR for the flight.
Where is my fault? They said the booking isn't confirmed and I shall get my refund. So, I went and booked another flight. Now they are saying the first flight is confirmed. Please resolve this issue as I am not at fault. Please help me get my refund.