The budget airline provides for appalling service, there is next to no recourse for the customer with regards to lodgement and resolution of complaints, once you have made your bookings, and face issues resulting.
The airline's shortcomings and lack of customer service should be widely advertised to future potential customers who will be left high and dry should they require further recourse to issues faced once their bookings have been paid for. Legal action is too costly and wrought with delay, in the hope of just recouping your losses, and the customer service contact details provided by AirAsia on their website provides you with an autoreply service, with a promise to contact you in due course that is never ever fulfilled.