I had the same issue had to un-link my krisflyer account and Flybuys
The accounts need to be activated by velocity first to unlink
Krisflyer unlinked easily and so did Flybuys from my Flybuys account but did not unlink at velocity end
Velocity had to set up a request to unlink told will take 5 business days but took 2.5 weeks with me calling every second day after the 5 business days timeframe
I do have my account back finally with new velocity number after hack took place on 03 July 24 reported 04/07/24
Worst people to deal with to get anything resolved with
The fraud dept does not communicate no correspondence in the whole process except email when points were reinstated after contacting email below
I only got the points reinstated is by emailing
[email protected] after lapse of 40 business days
Account points were reinstated in 1 day of emailing customer care above with a long email but Flybuys unlinking took another 2.5 weeks
Total time to get my 1.3 million points reinstated 10 weeks
Feel it’s time to back Qantas FF now