SHOCKING SERVICE!!!

in February I was debited for an amt of R900+ from Vodacom and I have never opened a contract with them so imagine my surprise!!! I reported this to customer care who gave me a list of things to forward to ***** department which I then so did!!!!! I have yet to receive a reference no. or any feed back from Vodacom regardi ng this matter ... AND then to make matters worse I get debited again this month for another R1200+ ... again I phone customer care who says the sim is black listed but they cannot do anything from there side cos the person who opened the account is buying airtime ... so I ask to speak to accounts I get told I cant I ask to speak to ***** I get told I cant ... WHY AM I STILL BEING DEBITED ON AN ACCOUNT THAT ACCORDING TO CUSTOMER CARE IS CLEARLY MARKED AS *****!!! and why is accounts and ***** so scared to speak to the public maybe its because they are useless at giving feedback and updates to people with genuine queries ... No one is assisting or can assist or give feedback in anyway your customer care dept is customer careless and accounts is obviously blind and ***** is clearly non existant so why bother reporting it ... seriously poor service from your company