Make My Trip - Ticket Reissue

I had booked an international return ticket through ‘Make My Trip’ portal. The booking details are as follows –
Date of Travel – **th May ****
Name of the travellers- HEGDE, REKHAASHOKMS
HEGDE, ASHOKSADANANDAMR
e-Ticket Number: *************
e-Ticket Number: *************
Booking Reference: **RT*I,
Airline: DL/G*DK*P
Flight information:
Flight Info:
Date **MAY Dep Time **** From MUMBAI To NEW YORK Flight No. DL** Terminal * Airline DELTA AIR LINES
Date **MAY Dep Time **** From NEW YORK To WASHINGTON Flight No. DL**** Terminal * Airline DELTA AIR LINES
Date **JUN Dep Time **** From WASHINGTON To NEW YORK Flight No. DL**** Terminal -- Airline DELTA AIR LINES
Date **JUN Dep Time **** From NEW YORK To MUMBAI Flight No. DL** Terminal * Airline DELTA AIR LINE
Total fare paid – INR *,**,***/- paid through HDFC Bank Credit Card. The credit card statement is attached for reference.
The above ticket was issued by Make My Trip after schedule change for Booking ID-NN*************.
Please find attached both the mails received from Make My Trip.
The Corona Pandemic affected the travel because of lock down and shutting down of airline operations. Accordingly, this scheduled travel could not be taken by us. I enquired with the airline whether the ticket can be kept open for future travel. Airline agreed and sent a mail mentioning the extension of validity of the ticket first till May **** and subsequently up to September ****. Please find attached both the mails received from Airline.
Now we would like to travel to USA and I enquired with airline for the validation of ticket for travel in the month of April ****. Airline informed us that the third party, here, ‘Make My Trip’ has suspended the ticket so reissuance of ticket is not possible from Airline. I called up “make My Trip’ customer care (number **** *** ****) to know the status of my ticket. But they are not giving me any information and keep telling me that they will contact within ** to ** hrs after the call. This has happened twice in the last ** days. I have NOT asked ‘Make My Trip’ to cancel/suspend my ticket and neither they have refunded any amount. I am waiting for a response from Make My Trip either to issue a rescheduled ticket for travel or refund the entire amount.