Cox & Kings India — refund issues

We, three people, had booked a trip to thailand last month through the chennai office and had paid the full amount (Around rs. 150000) for the same. But we had to cancel the trip at the last minute as one of the members got infected with dengue and was admitted to the hospital.
Cox and kings did not return a single penny to us; neither did they offer us the choice of proceeding with the trip within a year taking the flight fare additionally.
I can understand the ticket fares are not refundable. But they should have at least paid us back the amount meant for accommodation and other expenses.
Expecting good reply from them