Woolworths double charges and then does not respond

I purchased two pairs of shoes on a promotion day. There was stock when I made the purchase but at 2 am the following day, I am notified that only one pair is available. The promotion has then ended so I am unable to buy the shoes at that price at a store. The worst however is that the money is then deducted from my credit card and now two weeks later the full amount is still reserved on my card as well. I have sent two emails and several Facebook messages to Woolworths with a standard 'we'll get Online to get back to you' response. Online sends a template email message which does not address the issue at all and ignores my reply email which tells them that. No luck whatsoever since the 18th of December in getting the money unreserved on my card!

This is the worst experience that I have ever had with Woolworths and will be my first and last online purchase!