Maxis and DiGi will have your final bill pro-rated. Meaning that they will charge you till the day you ported out your phone number to another telecom. While Celcom will bill you a full month subscription fee regardless of the date you successfully ported out from Celcom.

So unfortunately in your case, while your Celcom service ended on 3rd September 2017 and your billing date is on 18th September 2017, you will still have to pay your Celcom subscription fee in full.

This post has been edited by MilesAndMore: Oct 2 2017, 10:42 PM