Yesterday, on my birthday, my AT&T cell phone (in my mother's name) rang waking me. Caller ID showed "Unknown" so I let it ring off. A few seconds later I got an email from Google Voice saying I had a voicemail. It was Centennial calling for my mother. She had canceled her service and just received her final bill. My call history indicates they called my Google Voice number (which forwards to my AT&T phone) NOT my AT&T phone directly (one might assume they would call my AT&T phone since AT&T bought... read full review »