Make My Trip — HOTEL DENYING ACCOMMODATION

I had done a booking for O LAND PLANTATION at CONOOR .from 8th May to 10th May through make my trip. When i called up the hotel people they are denying accomodation on the above mentioned dates as all their rooms are full.They have said that they had intimated MAKE MY TRIP about the same. I request that accomodation be provided at the said hotel or a full refund of the amount paid up which is Rs. 11, 500/.