I had two such services, can't remember their names right now, on my AT&T bill about 3 months ago. I called both of them and threatened legal action if they were not removed and any moneys taken from me returned(due to the nature of the bill I had to pay the full amount). They returned my money and canceled the services. Now just why would anyone need two voice mails?
I also called AT&T and asked them how they he** they could allow those things to be put on my bill without consulting me or demanding proof I was the one who ordered them. No satisfactory answer was forthcoming.