Air India — need my refund money

Address: House No. 588, Lala Dora, Near Shivalik Public school

I booked a trip from patna to delhi through makemytrip.
The tickets were with air india. Air india cancelled the flights in may and makemytrip told me that once we get conformation of refund from air india,
You will get the refund processed. I have waited over 3 months and called makemytrip 5 times,
But atlast they are telling me that you have to reschedule your ticket with air india. I have already reached my destination, no further use of that ticket.

Ticket details are bellow.

Booking id: nf[protected]
Passenger name pnr e-ticket no.
Md waqqar azam, z19fe 098-[protected]