AirAsia just sent me an SMS and email cancelling my flight from Melbourne to KL. They suggested another date which I agreed by replying the email.

I've heard many stories on AirAsia flight cancelled, and slow response and difficulty in re-scheduling flights. Is it true?

If I don't hear from them on the flight re-scheduled confirmation, what's the best way to reach them and get confirmation? Any advice on what I should do?