MakeMyTrip India — I haven't received my cancellation flight refund

Address:

MakeMyTrip India Pvt. Ltd., DLF Building No. 5 Tower B DLF Cyber City, DLF Phase 2 Sector 25, Gurugram, Haryana 122002, India, Gurgaon, Haryana

I have to cancel my flight scheduled for 8th nov bangkok to delhi, for which mmt processed the refund of rs 6900.
Today 6 nov, i get the call from mmt executive that they can not refund my amount as the airline has denied the refund.

Contrary on the 2nd nov, the mmt website automatically initiated my refund and they promised the refund. It seems they have deceived me with false information and do not wish to refund my money. This they might be doing with many of their customers.

Please help me get my refund amount and take strict action, they are cheating many people.