Vodacom incorrect billing

Upgrade canceled (within 30 minutes which was done without my consent for upgrade) and fixed later, just to find out that I am billed twice for 2 upgrades on 2 different numbers, Vodacom said that it will be haned for investigation to their backoffice, who were suppose to follow up….. nearly a week ago!!!!!!! If I add up my individual numbers of all my contracts I get a total DIFFERENT amount. They just billed me twice for the upgrades. I was told that they did give me the extra data and mintues, that I did not require or needed as my old contract was enough