Back in 2004 I had what was (IMO) a serious business complaint revolving around poor service etc with Optus.
It escalated eventually to the ombudsman who promptly fined them $20k and gave us strict guidelines about how quickly the issue had to be resolved by Optus.
Foolishly they didn’t heed the warning and soon we were in touch with the ombudsman again.
This time the fine was $40k.
Somehow they managed to act more quickly to put things right this time