Upgraded contract without my consent

<p>Vodacom went ahead and upgraded both my phone contracts without my permission or consent. I am now in a position where they are passing the blame from one contracted company to another. I want this contract to be cancelled asap, but no one can help me. Do I cancel my debit orders and not pay the contracts they will then blacklist me. So who do I speak to!!!!!!!!! This is *****!!!!</p>