American Swiss false advertising

I recently purchased a watch from American Swiss online, during their black friday sale. purchased the watch and got email confirmation that my order was successful. 3 days later I received and email from them telling me that the watch was not available as they had searched all their stores with no luck, and I would be getting a refund. I've waited over a week and have not received my refund, not sure why it would take long if there was no processing of goods, like if it was a return. I decided to give TFG a call today, waited on the line for over 15 minutes, so spent R100 airtime to call them, while waiting on the line I went through their website and realized that the watch was back online (no longer with the sale price), which made me wonder how a watch that was searched everywhere was suddenly available a week later. when I finally got through to the agent, she advised that I should check with my bank as they had released the funds on their end, anyway I told her about the watch being back online and asked if they could send me the watch instead of the refund. she told me that they could not reinstate the purchase and I would need to repurchase the watch and pay the higher amount, as there is nothing they can do even though it was a fault on their end. I am highly disappointed, and feel that American Swiss played me for a fool, as this was potentially false advertising, and no sense of responsibility on their end.