GoAir — Full Refund against cancellation

I Gourav Kumar, goair passenger having PNR XYGK8T traveling from Leh to Jammu on 27/4/2021.
Firstly the airlines cancelled flight no G8357 and G8125. After that reschedule my booking on another flight i.e. G8204 and G8697 on 27/4/2021, but the airlines again cancelled both the flight and reschedule my booking on next day on 28/04/2021 in flight no G8204 and G8697.
Lastly airlines cancelled both the flight on 28/04/2021.
Airlines asking me to cancel or reschedule the booking for another day, but this time airlines asked me to pay the extra charges for reschedule and in case of cancellation cancellation charges are deducted from refund amount.
As the flight is cancelled by airline itself how they can charge such extra charges.
I already lost my two days and due to flight cancellation the important work which I have in Jammu is already delayed.

GOURAV KUMAR
PNR XYGK8T