disappointed woolworths online customer

I bought shoes online on the 24th of December, and the transaction went through. On the 28th I received an email from Siphenkosi Bhavuma that the shoes are no longer available and my money will be reversed back to my account automatically within 48 hours, 8 days later still waiting for the funds to be reversed. This is not good service at all, I'm greatly disappointed on how they could allow me to buy a shoe then later be told its not there and further wait for the funds to be paid back. I saw a similar shoe online different colour , it could have been replaced with it if the funds are taking so long to be reversed. Can some action be taken with regards to o***.