I received 20 calls from this number yesterday on my cell phone and it was annoying since if you answered they said nothing. I decided to ignore it but finally dialed it back for it to say it was ATT and to contact them on their website regarding ATT offers. I do not have ATT as a wireless provider so why are they calling me. I blocked their number and hopefully they will stop but as many know they will probably just use another number in the future to harass me again.