Upgrade anger

I am due for an upgrade. I upgraded online as Vodacom encourages you to do so by saving on the R150 fee as well as offering exclusive online deals. I was interested in one of the exclusive online deals and upgraded. I received a confirmation mail saying my upgrade was successful and that I would be contacted by RAM to arrange delivery. I did however notice that it showed stock status as being "OUT OF STOCK". this concerned me so I contacted Vodacom customer care. I spoke to a man named Ricardo who informed me that I had to go in store for orders as there was a note on the system. so Iwent to the Vodacom in eastpoint centre Boksburg. The assistant manager couldn't understand why I had been referred to the store and he also phoned. No one can give any indication as to why I have to go in store. after speaking to someone from Vodacom he instructed me to wait till the next day for confirmations department to contact me because as far as he can see there is no problems except for the device possibly being out of stock. so I did and when I didn't receive a call I phoned online again. who again instructed me that the order is open and awaiting confirmations. well Wednesday arrived and I still had heard nothing nor had I received a new mail. only to be told when I phoned in to the aftersales that I have to go in store and my order is cancelled. Yet other that a successful upgrade e-mail I have received no correspondence from Vodacom telling me that there is an error with my upgrade and or can anyone indicate why I have to go instore to do my upgrade. I now will have to be forced to pay the R150 fee as well as not be able to take the device deal that I wanted as it was an online exclusive. Not happy at all