MakeMyTrip India — Refund of my ticket from Boston to Chennai

Address:

MakeMyTrip India Pvt. Ltd., DLF Building No. 5 Tower B DLF Cyber City, DLF Phase 2 Sector 25, Gurugram, 122002, chennai address: MakeMyTrip India Pvt. Ltd. No-3, Arcot Road,Alwarthiru Nagar,Chennai87

I initially booked my return ticket from Boston to Chennai for 7th of December via booking reference VV2WGJ through make my trip(Rs.68, 857 for both ways and hence the price of single way came to Rs.34, 428.50)

On 15th March 2020 I postponed to 3rd April 2020 by me due to health issues by paying USD 100 more (hence the cost of return ticket was Rs.41, 428.50 approximately assuming the USD conversion rate was 7000 at that time)
On 18th March 2020 British airways cancelled the ticket due to international lock down in India. I have applied for the e voucher equivalent to the ticket price on the same day. British airways sent me a confirmation mail that my future travel voucher was under process and I will receive the same in the next seven days, which I have not received till date.
British airways sent me a mail on 25th June 2020 that the refund should be processed only through my booking agent which is Make my trip.
Make my trip has the following email ids in their website and I have sent a mail to all the 3. The response is given below:

[protected]@makemytrip.com - no acknowledgement received

[protected]@makemytrip.com - mails bounced back stating that there is no such id.

[protected]@makemytrip.com - the auto response is pasted for your reference:

"Thank you for contacting us. We request you to visit the My Trips page via app or website for your booking related query."

I registered a compaint through make my trip app for claiming my refund. They have responded to me on 16/12/2020 with the status "response awaited from airlines" from a noreply email id to which we will never be able to write back. Most of the help line numbers given in their website are wrong and the toll free number takes us to IVR facility only and we will never be able to talk to any of them.
It is going to be one year now and Iam made to run from pillar to post by make my trip. Iam attaching the word file which contains the mail confirmations I received from British airways and make my trip. Request you to help me in getting my refund of Rs.41, 428.50 at the earliest.