Vodacom trying to take money over and over and cant fix problems

In Sep I received a sms saying my account is in arrears with R2700, I phoned in, the lady I spoke to said she will check and phone me back. When she phoned me back she said I should not worry it was a mistake on Vodacom side. When I phoned on 30 Sep to upgrade they said the account was not fixed yet, after speaking to numerous people from one department to another, I spoke to someone who requested that I send in a screenshot from my bank which I did. I was then told that the team leader will allocate the amount. I was told it was fixed and I upgraded. Now once again they are saying the account is behind which it is not. I phoned on Sat and spoke to Amanda who confirmed after I explained the whole story that her team leader will fix this within 7 days. Today my services gets suspended after numerous people from your company confirmed it was fixed. How could I have upgraded if the account was behind? every time I need something from you it is a issue. it took you 7 days to reverse and fix a sim only upgrade which I didnt want in the first place. I want this fixed today and my services restored, someone does not have a clue how to do their job