Hey @nhw - the best number to call would be sales support via 1300300562. That's the direct line to get through.
don't you think I haven't called this number?
I tried 133937, 1300300562 & 1300929949. All consultants said they can't help and direct me to a line that keeping me on hold for more than 2 hours (check my phone history, I have called Optus more than 37 times in the last 2 days, not even counting online live chat!)
I give up calling Optus now and just wait for my order to be cancelled!