Vodacom *****

I do not have a vodacom contract or a vodacom sim card yet I have a debit order every month from vodacom.i have made multiple calls to vodacom trying to get to the bottom of this.I was told to inform ***** department which i have done about 5 months ago (my account has been debited monthly for over a year)a lady calls me stating that she has concluded that it is a ********** transaction however,she works for an independant company and will contact vodacom to inform them it is indeed **********.my account is still being debited 5 months later,i keep calling vodacom and they keep telling me to wait???? What kind of service is this!!! RiDICULOUS!!!