MakeMyTrip India — Refund not received for flight cancellation due to medical emergency

I booked a return flight from delhi to toronto for travel dates 25 sep 2023 and return 9 oct 2023. On 31 August 2023 my mother got unwell her travel was not recommended due to a heart condition . I got her flight ticket and my flight ticket cancelled.Her flight was not booked from makemytrip while my flight was booked from makemytrip. I had to take care of my mother so i also cancelled my plan and shared all the required medical documents with them on 2nd september 2023 itself but they have just been delaying things and now they have even stopped responding. I am attaching all my documents / conversations. Moreover on looking at make my trip i could see that they have not even cancelled my seats.
Please take necessary action against them