8778445584 / 877-844-5584 Reverse Phone Lookup

A collect compay mail us a letter to told we own their ( AT&T) money a few year ago.After we told we have a question about ,they told us this number 877-844-5584.But when I call them it was not told ATT ,just say for English dial 1 ....................Than hear thanks to call New AT&T.We told then we never own account with them.The told will mail us a form to fill in. Get the form yesterday ,but it was ask a lot of personal question and need all copy of our ID.My friend told not to doing it.And stop by ATT storefind out ,Is it the true ATT or not.