Vodacom supports *****ulent resellers above customers

A reseller of Vodacom, RewardsCo in Durban area called me in July to upgrade one of my numbers. I asked for an email confirmation of the deal before going ahead. I never received an email but suddenly received a SMS on 6 August confirming my quotation is now an order and the contract dates is another 24 months. They acted *****ulent in this regard and will not do anything to reverse the deal. I actually needed a new handset and this deal is just airtime. I did not approve anything with RewardCo and Vodacom says it is my problem to sort out.