iPhone 6S preorder pricing error

I preordered the iPhone 6S and was quoted incorrect higher rates. When confronting the online team I was originally told that the phone would need to be returned and the upgrade reversed but was then told that I would be migrated to the new lower rates. This was confirmed in writing.<br> <br> I was moved to my new package on 31 October. However, Vodacom cancelled my data bundles on 30 October and removed all minutes (despite the new contract only being applicable from 1 November). This is dishonest! I have also not been migrated to the lower rates (as per Vodacom account web site) or received my allocated free data as advertised.<br> <br> Please reverse my upgrade and come and collect your phone as you are clearly incapable of resolving the issue despite all the many emails and hours of phone calls. I have no interest in fighting further or listening to explanations. Fetch the phone and reverse the upgrade!