Billed for DATA that I never Requested or Bought

I upgrade my Cellphone Contract in the middle of November. When I Received my Bill (03/12/15) I saw that there was a Add on Internet Bundle which amounts to R 546.77. I did not request any data to be added to my account, and I did not purchase any data bundles. Because when I upgraded to the Smartplan 100 for the Samsung Galaxy S6 I was told that I will receive UNLIMITED Data until the end of March 2016.<br> <br> I phone Telkom Mobile the day after I received my invoice to Report the problem, I received a case number: ***5. They said it will be resolved within 5 working days. I phoned them back after 2 weeks, and it was still not Rectified. After numerous phone calls to them the problem was still not sorted out and I had to Pay for that Data, and they will Credit that amount to my account. <br> <br> If that Data is on my invoice Again this month I WILL NOT PAY for it. Because I am not using the data, and i did not request it.