I posted up-thread that if you really pushed, you might be able to get a refund of your fare. What I should have clarified is that such would only probably be available if you could show that the CD was a primary enticement for booking your particular flight.
Having had a chance to look further over the QF T&Cs (Conditions of Carriage and CD Terms), I now think this may be a tough one to win. To show that the CD enticed you to purchase your fare with QF, you'd need to establish that it was offered to you as a reason to book your QF fare - i.e. that it formed part of the sale. The problem I see is two-fold. Firstly, the QF Conditions of Carriage make it clear that the fare only includes the transport of you and your checked baggage between your departure airport to your arrival airport as shown on the fare. They specifically exclude transport between the airport and any other place.
See here:
http://www.qantas.com.au/travel/airlines/conditions-carriage-full/global/en#jump5
Secondly, the CD terms make it clear that the service is subject to change. See here:
Qantas Chauffeur Drive Terms & Conditions where 21 states:
21. Qantas reserves the right to withdraw the Chauffeur Drive product or to amend its terms and conditions at any time. This right is not intended to limit or exclude any rights that you might have under any applicable laws, including consumer laws, which will depend on the relevant jurisdiction.
The second sentence may be a hook to pursue a claim if you can show that you reasonably believed that the CD was part of your fare - but that will be tough because IMHO CD is not advertised as part of the sale process - it's separately advertised as a benefit, but is not "packaged" with the fare at the time of sale. There may still be an argument, but could anyone really prove that the CD was a
primary reason they booked their flight -surely the reason you book a flight is to get from point A to point B...
I too have impacted bookings, so I can relate. But just trying to provide a bit of context to the way any ACCC process might play out when assessing QF's conduct.