Air India Express — Cancelled confirmed booking and not providing refund

Address:

Air - India Building, Nariman Point Mumbai Mumbai City District Maharashtra India - 400 021

I have booked my tickets from mumbai to dubai dated 28th october 2020 (Pnr nczjoo) booking is in the name of mustafa vohra. Now i have received an email that due to covid19 situation flight is not operational and i can change my travel dates.
Do you think its easy to change the travel dates when we have pre planned everything our return flight and hotel is already booked. So who will bear all those expenses will air india express bear this all expenses. If you are not sure about your flight operations then why the hell you take bookings. And your customer care guys are saying that if i cancel my tickets than i will have to pay 2500 per passenger, why the hell should i pay cancellation charges if your flights are not operational.
I require my full amount to be refunded i will not bear cancellation charges for your mistake.