Snow Vally Resort Shimla - Modification in the Hotel booking date due to Medical emergency

Due to medical emergencies our trip will get delayed by around * week. As my mother (one of the traveler) has to undergo a minor surgery due to which there will be deviation in our travel plan. I had requested that please postpone my booking dates. Booking number SVR/SML/**/****. But they denied saying hotel is fully sold and this will be loss for them. But when i checked it was showing that rooms are available with **% discount, I had paid *.*k/room now its available for *k. They had stop responding to messages and calls