MakeMyTrip India — Flight cancelled by airline but refund not full

Address:

Gurgaon India

I had booked air ticket from Bangalore to Bagdogra on 15th May 2021 for 4 members of my family on www.makemytrip.com. On 13th May 2021 the flight is cancelled by airline due to operational reasons and refund initiated. But fulll refund is not given but so called "convenience fee" of MakeMyTrip is deducted for Rs.1, 410/- I do not understand the convenience fee - is it for cancelling the flight FOR NO FAULT FROM US. Total amount is Rs.20, 714/ whereas amount promised [not yet credited] is Rs.19, 304/.