Hello! I purchased a surround sound system from an company yesterday for $1,499.00, their advertised price on their website (which I have a screenshot of). I was aware this was a very good price for the system, so was very happy. Then, I received a call this morning from their manager to tell me the price was wrong, and really should have been $1,999.00. My credit card payment for the system has not yet been processed. He offered me $100 off the corrected price so I now have the choice to a) cancel the order, or b) pay $1,899.00. Are online companies allowed to just change pricing once you have placed an order like that under Australian Consumer Law?