A fake rep, posing to be from the AT&T phone company called to tell me she was notifying me of a need to approve a new "billing service" to assure that my billing fee remained the same. It was very slick, well presented, and quite believable. My red flags went up when they wanted the "recorded verifications", just to make an internal billing change. I quick did a web search for their "billing provider", called NSBI and discovered lots of complaints. When I confronted the caller, she immediately hung up. NSBI is a fraud based company. They are trying to "slam" you to a new provider. read full review »