Over charging

I upgraded my MTN contract on September 2015. The upgrade included only a MTNChoice 100 2 year contract with a phone. <br> <br> My account should be approximately R349 per month includes Vat, but from my upgrade, my account has been approximately R548 or above.<br> <br> By following up with my MTN shop and the call centre as well as going through my online statements I eventually identified the problem. The problem is that all items that I did not have on my previous contract was added on for my upgrade contract loaded, which I did not want .<br> I been promised since end September that it will be corrected , since then I not being helped .<br> I phoned several times and again today and I am getting the same answer <br> <br> The following reference numbers are applicable:<br> ***<br> ***<br> ***<br> ***<br> ***<br> ***<br> <br> Please correct as soon as possible and credit my account according<br>