Claire - here's some legal "stuff" you can mention to them if they give you a hard time:

Under the Trade Practises Act you have statutory rights which cannot be excluded, limited, or changed in any way by a retailer or trader.

Fair trading laws are slightly different in each state, but your rights are essentially the same everywhere in Australia. They are: that any product you purchased will be yours entirely; that the product will be of merchantable quality, and fit for its purpose; that any goods bought will match the description or sample; and that a product will be free from hidden defects. If the product you have purchased does not meet any of these standards, then you are entitled to return the product and receive a refund.

If the product does meet these standards then you are not legally entitled to a refund. So if you change your mind about a product, or you realise you can't afford it, or it turns out to be too big or too small, or you bought a blue one but now you'd like it in brown, or you bought it as a gift for your uncle but he's already got one, then you must rely on the discretion of the retailer as to whether or not you can get a refund or exchange. [obviously, none of this applies to you]

To claim a refund, you should return the goods within a reasonable timeframe, and you should not dispose of or destroy the goods or damage them further. You will also need to provide proof of purchase, such as the store's receipt or credit card receipt, and, of course, give details of how the product is defective or unsuitable.

It is illegal for a retailer to refuse a refund where a product has a hidden defect - EVEN IF they have a sign that says "no refunds" (such a sign is illegal as you are always entitled to a refund for a defective product).

You can find other stuff throw the links on this website:

The Source :: find :: Consumer Rights