Discovered charge on my ATT invoice. Called number 800.215.1961. They said someone with my number clicked on an web site and, as part of the clicking, the phone number was signed up for this service. It is not clear how this happened. I assume there was small print somewhere indicating the signup, but it got by whomever it was in my household or acquaintances who was browsing the internet.
I asked the person at the end of the number to remove me from their roles and remove the charge from my invoice. They said they would. I called ATT and they said they had no control.