Then lodge a complaint with the ACCC, you may be surprised at the response. (Also helps to send a copy of the complaint to the manufacturer)
You may also get more joy dealing with your reseller as well - as the sales contract is with them, and they should be the ones making it right, and then it will be up to them to claim back from the manufacturer.
http://www.consumerlaw.gov.au/content/the_acl/downloads/consumer_guarantees_guide.pdf has more information and is a very easy to read guide
http://www.consumerlaw.gov.au/content/Content.aspx?doc=consumers_ACL.htm has contact information and advice on where to file a complaint
I've found printing out the guide and taking the relevant section in with you when you visit a retailer has worked every time. It got my fridge fixed out of warranty, and my PS3 replaced when the DVD drive died about 2 weeks after the warranty expired.