I'm somewhat surprised you can still get fares under $15 anyway. The past few times I've taken them which haven't been for very long distances, the fare is still substantially more than $20.
The old machine doesn't work is a favourite,
They're still doing that, are they...
Also had one Melbourne driver nick off with my credit card, and was unable to get it back even though it was reported to the cab company within a minute, and the card company within an hour. He then proceeded to charge ever increasing amounts for a lengthy period of time. Cabcharge wore the loss as I understand it.
One of my worst experiences was at Sydney airport was when I went to get in, gave my destination, and the driver started swearing at me loudly and forcefully and lengthily to get out because it was too near (incidentally, one of the fares I referred to >$20 above).
I was a bit shocked and did so and got into the next one, and was then told off by that driver for not taking the one in front and saying I should have argued and took down details and so on, although he at least took me.
Yeah, you live and learn, but equally these guys shouldn't even be doing this. It's not the passenger's fault things are the way they are, yet to get abused just because you're using a taxi is really screwed up. As for reporting them, yes you can do that, but even the Victorian one just says it will be noted on his file. Sure, he may not get that promotion, but I don't know that he is looking for it either.