Adding unauthorized services to my account

Attempted to call Vodacom customer care. After several dropped calls I got through to inform them that a service called "Vodafone live" is now active on my account without my authorization. They deactivated it immediately but told me id still be charged for the month. They could not tell me exactly how this happened and still insist I pay for the month. I don't know what the service was for but I am really annoyed as to how this can happen without my consent. This is ***** and Vodacom needs to take accountability if proper controls are not in place on there side to circumvent issues like this.