It seems like the Washington D.C.’s district attorney doesn’t see it that way though, as it’s suing AT&T seeking the return of the unused minutes whose last known address was D.C. and who haven’t used ...

Officials at Wal-Mart could not be reached for comment. Having entered the prepaid phone-card market just two years ago, AT&T is a late comer to the $2 billion calling-card market. Sources say the ...