Airasia — airasia flight got cancelled and today asking to get another ticket

Address:	560092
Website:	www.airasia.com

I have booked one ticket with pnr mmq4qy, the flight is on 18th feb but today only i received the flight is cancelled due to aero show and the customer care executive is very very rude while talking and asking to book another ticket if i am planning to take another ticket it costs me 7000 now who will compensate for it, at the time of booking why its not being conveyed just 5 days before they informed me so how could i get it done now. I have an urgent task to do that day.