Indian Railway Catering & Tourism Corporation [IRCTC] — IRCTC Air-Refund not received

I tried to book 2 tickets on irctc air on May 17th 2021 via paytm wallet, Money deducted but ticket didn't get booked.
After checking with IRCTC air they told it could be the issue at PayTM end but they have raised refund from their end. Then I checked with PayTM they gave me an order id saying the issue was at irctc end.
Now problem is whoever has the issue I'm not getting the refund amount. Even I checked with my bank they said they haven't received any refund request from said merchants.
Below are the details :
Amount deducted : 4720.18 Rs.
Travel date : July 2nd
From Kolkata to Agartala (flight ticket)
Status : Not booked.

Kindly check and refund asap.