Contract renewed without permission.

My contract with Telkom Mobile ended at the end of October. <br> <br> Leading up to the end of my contract, I was contacted 2 times by a Telkom representative, letting me know that I was ready for an upgrade. I told the representative that I was NOT INTERESTED in an upgrade because the deal was not good enough. I told her that I wanted to keep my current deal, which she told me would be fine, and that everything would carry on the same as before. <br> <br> I was being billed approx R170 per month on my contract, and with that I received a Samsung S3 Mini, 100 minutes and 5GB data. <br> <br> When I received my invoice this month, I noticed that the amount for November was extraordinarily high at over R500, so I phoned Telkom to find out why.<br> <br> Apparently I have been moved onto a month-to-month contract - the contract which I specifically said I DO NOT WANT. And I am paying R538 towards a new Galaxy S3 Mini, which I DO NOT HAVE!!! <br> <br> I am so upset with Telkom for giving me no warning or explanation, or option on this matter. I received no email or phone call or SMS warning me that I was being moved. And now they are *****ING from me by billing me for a phone that I DIDN'T RECEIVE and DON'T WANT!!