MakeMyTrip India — Refund amount not received from MMT

Sir,
We had booked air tickets from Make My Trip on 12/01/2020 for Mumbai to Singapore & return, scheduled on 16th Feb 2020 to 21st Sept 2020. Due to Corona Pandemic, we have postponed our trip to 20th Sept 2020 to 25th Sept 2020. HENCE WE RESCHEDULED OUR AIRTICKET DIRECTLY FROM AIR INDIA .
Since all the flights to Singapore are cancelled for the month of September 2020 due to pandemic, we are entitled for refund.
After a long persuasion with Air India, Air india finally released our refund to MMT on 03/ 02/2021. But till date we have not received refund amount from MMT.

My details are as follows-
PNR No: Y7Y4W
E ticket Nos.[protected] and
[protected]
MMT ID#NN[protected]