MakeMyTrip India — Refund pending since may 2023

I have booked a round trip flight from mumbai to patna for 15.5.2023 with additional zero cancellation fee . The return flight from patna to mumbai g8 352 was cancelled 2-3 days prior to the journey due to their operational issue hence i had cancelled my entire trip, the refund request was raised immediately but till date no refund has been received by me.The status in the app shows refund refunest in proecss.I made multiple calls to the airlines as well as the makemy trip customer care but all in vein.Need your kind intervention here.