I think the OP's original beef of a 45 minute waiting time is very much a legitimate subject for a rant.
Also, if QF called back and left a, er, unconstructive message - if that happened to me, I'd be taking the recording to QF complaints.
If you go here
AFF Qantas forum and post your QF service experience in a straightforward and calm manner, the QF rep
RedRoo might pick it up and investigate for you. In that forum, the QF rep is pretty pro-active in taking up posters bad experiences.