How to cancel astro?

Oh yeah this is the Tiger Year I am sure you are waiting to collect the Ang Pao. Get ready with your big bag to put them! Don't forget to save them for your bank account.

I like to know if you can tell me how to cancel astro. Some friends told me that you need to send back the decorder to Astro. I don't know if this is true, I recall my friend told me that she just call by phone to cancel it.

Have you got your hands on the Astro Ang Pao? It is not many as you can see the picture.