Poor Service

I have a Vodacom contract for many years now but it seems like Vodacom has come to the point of not assisting. I have been trying now for over a month to get a upgrade done without my concent reversed. this seems to be an impossible task and I am really tired of being told that the number in question in on an old system. Every time I am told that it will be processed and will take up to 7 days to reverse back so that I can do a full upgrade. This 7 days started on the 29th February with my first call to Vodacom. I received reference numbers but still no resolution to the problem and I am tired of being send from one to the other when you call. Why must customers keep on paying for something that they simply don't get anymore. Service