I wasn't there myself, what happened is that I rang Castle Hill and they had none, so I asked if they could check other stores and was told that Bankstown had stock.
So I rang Bankstown and was told that they had just opened a new carton. You should ring them and ask to speak to the manager. The first guy I spoke to said they had none, so I asked to speak to the manager and he found the carton in the back.
Hope this helps.