Order placed on item with stock availability shown

On the 5th of December we placed an order which included a LeapFrog Epic Tablet. (We were willing to pay R1499.00 for the product as it is still cheaper, than many other mainstream retail stores. On the 10th of December the product was on a daily deal for R999.00, where there was still stock available. As part of our order the product showed available, but yet now it is shown as being ordered from the supplier. This is just not fair. A company cannot present products, and then later on a special (and not have stock!) Our order number is. supp****. Last year the service was really not like this.