MakeMyTrip India — Refund of money from MMT

I had booked my ticket for indigo flight via make my trip but flight got cancelled by airline due to lock down. Total amount paid was Rs 8770 INR but i had received only 3956 in my credit shell but remaining amount of Rs 4814 is still pending.
I have been trying to reach MMT for the same over phone and social media but they are not responding. I need my refund in my account in this cretical situation. I have urgent need for money.