Spice Jet Airlines — ticket price reschedule

Address:

Banipur purbapara dr.meghnad saha road, Vill-banipur, North 24 Parganas, West Bengal, 743233

I had my ticket booked in spice jet for andaman on 25 march and return on 31 march. But i want to postpone my flight ticket to and fro for andaman from 24 november due to corona virus. Please help as the airline company is saying that it will not return my money and i will have to pay 20000 more for rescheduing..
I am totally frustrated as why should i pay as this is a medical emergency declared by govt. Of india