im wondering how long does it take for pos ekspress to reach from kuching sarawak to subang jaya, selangor?

im not sure kuching is zone a b or c. but im in zone a.
i tried to track but they say it doesn't exist.
it has been 3 days.
usually i get it in one day (zone a to zone a of course)

what pisses me most is that.
why is it in the website it states.
you can only track after 15 days
when its dijamin sampai esok for zone a?
by 15 days what you wanna track?