Here's what I heard from my parents. After a week of dealing with call centre and a complaint form, here is the reply that my parents got:
[Please accept my apology for the wrong information. The standard discount you are receiving for your AA Smartfuel is $0.03 per liter. This is the initial information I gave you when you register your AA Smartfuel Card. The email confirmation was sent to you on 10 February 2012 and the reference number is 120209-000362.
As a goodwill gesture, I have arranged a credit of $30.00 to your TelstraClear account and this will reflect on your next bill. Again please accept my sincere apology for the confusion.]
Now, I don't know where this so-called 'confusion' is coming from, because I remember signing a contract based on that 'confusion' which was written down in a promotional flyer that I had received last year in my mail box. By the way, I am very certain that this 'confusion' was also in the original contract.
Now, I'm insanely busy at the moment, and my parents asked me not to waste my time, but I just had to point out what I thought was a blatant false advertising. Well, I honestly don't plan to follow up on this thread and waste too much of my time with TC for the next few weeks, but I just had to vent my anger and warn other people.