MakeMyTrip India — i'm complaining about delaying of refund more than 7 months

I booked a round trip flight from dubai to cochin through make my trip app. My return flight from cochin to dubai on 5th of april was cancelled due to lock down. The airline is ready to give full refund but they can only transfer it through make my trip. I have been trying to contact them ever since for the refund and they are not giving proper reply and they are trying to delay it. Recently i received a reply from make my trip that i'll get refund between 20th of august and 5th of sep and i haven't received. On 22nd august they replied me that i'll get refund within 10 days and after 4 days they replied again that i have no refund. I feel like they are purposefully delaying refund which is necessary for reebooking.