Vodacom account cancellation

Cancelled my contract with Vodacom in the beginning of the year, paid the remainder of the months. After I still got invoiced and money deducted which was more then my contracted amounts. I talked to the Cancellations Manager Fatima, got all my cancellations documentation and still I’m at the pre legal department for payment of a account cancelled months ago and paid in full. Vodacom is full of *********** staff and processes that they don’t even know themselves. Bunch of idiots