No, back then 2019, I called Maxis helpline to terminate, and it was terminated after the call ended.
However, earlier this year in Feb 2021, when I called in to change my postpaid to Hotlink prepaid, I was told the same thing that needed to wait 5 working days for their CS calling back for confirmation.
Maybe, Maxis has already changed the TnC.

Sorry, I've no idea. The last time I ported out Maxis was 6 or more years back.
What I know now is porting out from any telco would take a few times. Unless you're a user less than 3 months.

This post has been edited by ckimsem: Jun 18 2021, 10:29 PM