Not a customer anymore and start deducting money after 2 month again

<p> </p> <p>I moved over to another network,so i ask vodacom for my premature cancellation fee,and went to one of their branches the same day and settle them,then took all my dokument and sen it to ********** they reply that they did received my mail with reference nr,and a week later another mail that my cancellation has been processed on 30/9/2016.Suddely they start deducting money again on 1/12/2016 and 3/01/2017.when i call them they put me from one department to another after almost a hour they put me thru to cancellation department but i first have to put in my cell nr,when i do that the voice say i am not on they data list and cut me off.</p>