This is the screen that I see: http://i.imgur.com/AF4mO.jpg

Where is the cancel link?

I was hoping not to have to call QF as I'm in Germany right now but I may have to do just that.

And the reason for cancelling is that SYD-NRT was not full at all on the way there and by the looks of it, NRT-SYD won't be full as well ...