Pathetic Online Customer Service - False advertising

I made an online purchase for Samsung fridge which was clearly in stock at the time of my purchase. An email was sent to me - "Your order has been signed, sealed - and will be ready for delivery ASAP!" A day later another email was sent to me "The Samsung 501lt Side By Side Fridge RS50N3C13S8 SKU: *** that you ordered is unfortunately no longer in-stock as per communication from our warehouse. In this instance we are going to have to refund you the full amount for your purchase. The refund may take 7-10 business days to reflect in your account. " They took my money immediately but now I must wait 7-10 business days for my money to be paid back to me. The item was in stock at the time of placing the order but now I am told otherwise! Pathetic responses from them on email and even worse customer service when you try to call them.