Buying from game online

On the 8th of June I purchased the Xbox one S from game online as none of their shops had stock. When I purchased it, it said they had stock. After numerous phone calls to track when my item would get delivered, I was told the courier company has it and they would contact me soon.

On Sunday the 21st of June I received a call from game telling me that they no longer had stock of the Xbox one S and They didn’t know how long I would be til they received stock again and that I would have to wait even longer to recieve it.

This is absolutely horrific service because how can your online tell me you have stock and your customer care tell me that it is by the courier company only to find out that you ****.

Is it because I bought it when it was on discount and you gave mine away to someone who actually paid the full price??

Absolutely appalling!!