WITHOUT MY PERMISSION CHANGING MY SIMCARD PROVIDER

I have got a pre paid simcard number from Vodacom. Without my knowledge and permission RMCS changed it to a \contract"via my Edgars Account. After spending 12 hours on the phone with 5 different people from their office they tell me I must pay a cancellation fee to reverse this transaction. I never ever gave any one or any business to handle us such. My simcard is no provisionally suspended! This is ***** as I never gave any business permission for a cellphone contract. They are in possession of all my prepaid monies and dates as well as banking details."""