Billed For Items Not Requested

<p>i have a contract with Vodacom, and for the last 3 months i have been told that i am in arrears, i dont understand how this is possible as i have a pre-paid contract.. my line has been disconnected 3 times already, i have requested an investigation and was tld that o requested the service when i did not, i called to cancel it as i di not request it, my profile is being affected by this and i have raised a dispute in this regard and have had not responce, i continue to get messages to advise that i am in arrears and i am frankly tired of it, if this is the service that is offered through the provider then i will have no choice but to change it.. </p>