Selling a device without stock and not informing the customer

Good Day

I placed an order for iPhone 6 32GB on Vodacom online on Monday 16 July 2018, the agent that I spoke to advised me that the order will be delivered withini 2-3 business days until now I haven't received the order.

I made a follow up to confirm if they have the correct delivery location on Tuesday 17 July 2018 and just track my order and confirm my details again due to past experiences.

I was then told that the device from the supplier is on back order and they waiting for confirmation for ETA.

I find this *********** as to how can an agent create an expectation and sell me a product and then tell me it is out of stock the following day whilst I could've been made aware of this whilst making the order.

Please do something about this as I believe I'm not the only customer faced with this issue.

Kind Regards W.M