Spice Jet Airlines — rescheduling penalty charges

My PNR is GDGL9A
I had booked flight for Bagdogra from Kolkata.
Under present COVID 19 pandemic crisis, we wish to reshedule our flights
Though majority Airlines are offering penalty free rescheduling, Spicejet has come up with weird terms and conditions.
Cancellation charges are less than reschedule
They are charging 1800 per ticket for cancellation and 3000 for reschedule. To add to it, they have fixed 30 th April 2020 as maximum date or cutoff for reschedule (for tickets bought before 14.03.20).
Are Spicejet Authorities so sure that by end of April we will all be free of COVID scare??

Why are we not offered rescheduling, free of penalty till 30 th September similar to other flight carriers.
Other charges like seat booking are already wasted, it would have been much comforting if rescheduling penalty was waived
Dr N Dutta Basu