Vodacom not attending to customer needs!

I recently upgraded my contract where I asked the salesman for a Red VIP package with unlimited calls and 15gigs of data. He advised that he cant assist and I needed to add a device to be able to upgrade to this package at a cost of R1650 per month. Visiting them a week later, wanting to open a new separate contract, they advised that they can give me the same package, without the device (which I had asked for a week earlier) for R1200 per month - R400 less than they package I asked for a week earlier! This is unacceptable as I now pay R400 per month more for a package that they said wasnt available. Northgate Vodacom's employees are not trained to help their customers! HORRIBLE SERVICE