MakeMyTrip India — refund of hotel booking

Address:

Dadar mumbai, 400016

I had book 2 international holiday package from makemytrip to singapore.
Our flight got cancelled due to rains and airlines gave us alternative flight
But makemytrip didn't change our hotel booking.
Infact they cancelled our entire stay at hotel and booked only for 1 night though our booking was for 3 nights.
Hotel refunded the amount to mmt but they are denying. Mmt told us there are no rooms for the revised dates though we book from their app itself for the revised dates.
Make my trip cheat people by taking money.
I want to take legal action against them.
I hope my problem is resolved.