MakeMyTrip India — Refund amount not credited to my card back

I have booked travel from bengaluru to nanded two airlines bengaluru to hyderabad go air and another hyderabad to nanded truejet on 26th Aug journey date, on 18th go air called and informed their flight is non operational so I called customer care go air and they cancelled my ticket and confirmed complete refund to make my trip as money, after 1 week when I checked my MMT account a credit voucher is added instead of money being transferred to by credit card, then I called go air again they confirmed we have not added any credit voucher we have transferred money back to mmt and shared transaction I'd 94215468, than again I have added web form and send mail to MMT with all details still they are not refunding my amount to my card back 12k, credit voucher they have added is non o[censored]se for me, kindly see the attached confirmation from go air and ticket details from MMT, kindly help me getting my refund back