greentea84,
It is quite interesting how strict they are on this pre-requisite. When I applied, although I had completed 2.5 years of university level mathematics they were only interested as to whether or not I had achieved a band 3 in the HSC.
Not sure about your direct entry mate as I'd be quite surprised if someone managed to get through without the proper education requirements. I'm also not sure if you can apply for a waiver or anything like that, what's most likely happened is they have completed an equivalent course at TAFE or a similar institution which I believe finestkind was alluding to.
Good luck with it though mate, let us know how it goes.
Cheers
Kyll