MakeMyTrip India — Ticket Cancellation : Customer Care

I have a flight ticket booked for the upcoming date 29th July 2021 through the application.
I need to cancel it and I tried doing that through app.
Booking id : NF[protected]
The app doesn’t open the page for cancellation instead only shows a blank white screen from where I can go anywhere.
When I tried contacting the customer care of MMT, it is basically non- functioning as all it does is keeps taking me back to the app. Also I had to try various numbers and the call cut in the middle most of the times and when I tried calling the number again then it said the number doesn’t exist.
I don’t understand what the situation is but there is money involved and there is no way to get it back.