MakeMyTrip India — amount deducted but ticket not booked and refund not received

I have been following up for refund since 12 the jul 2019 but i have not received proper response for the same till now.

I tried to book flight through flipcart-mmt on 12th jul, 2019 from hyderabad to delhi for 15th jul and my account got deducted for rs.5326 but that transaction was unsuccessful. I raised complaint at makemy trip and with icici bank they said amount will be reversed with in a week but not reversed till date. When i called to mmt help desk, they said it is pending with bank and they asked me to send the bank statement after that i didn't get any response from make my trip. When i contacted the bank they said they need letter from merchant stating that the transaction was unsuccessful.
Again i sent mail to make my trip and flipcart for letter, flipcart said that i need to do follow up with make my trip only there is no role of flipcart in this.
From make my trip there is no response till now and it is been more than 17 days

Transaction amount: rs. 5, 326.00

Transaction date: july 12, 2019