Air Asia — I need to refund my money due to flight time change

To whom it may concern i do not reside in malaysia. On 20 feb 2018, i booked 2 seats from kul to bki with return. On 18 mar 2018, airasia changed the return flight time which is not satisfying me. I requested to cancel the return and refund my money back as per their role.
Unfortunately, they rejected my request. I wrote their role in the following:
Airasia role:
5. Airasia changed my flight date/time! Can we change it? How much will it cost? How to change it? Can i ask for refund?

If air asia changed your flight date/time, you are allowed to change your flight date/time for free subject the change is more than 3 hours from your original flight.

Go to the nearest airasia sales counter / airport counter to change. Find out the nearest air asia office

Airasia allows you to retain the value of the fare you paid in a credit account for your future travel provided you rebook within three (3) months therefrom.