Make my trip - Refund not paid

I have cancelled my trip after confirmation of full refund from MakeMyTrip.
After cancellation **k of ** k was refunded automatically, however, on checking with MMT they assured me over mail that this was automated refund, your pending amount for refund will be done once they receive amount from Airlines and one of their supervisor confirmed on call that they have written approval from airlines on full refund
They also shared Refund application number they raised to Airlines.

Now even after ** days refund is not done and their executive asked me check with airlines, Airlines responded that this is agency booking and we cannot access this.

MMT does not respond over mail and keep asking to wait without any ETA.