Houston Call Center of Telco Concepts calling relentlessly "on behalf of AT&T". Supervisor Mike Labeff. Said his local do-not-call list is thrown out every time they get a new list from AT&T. He thought he put me on hold: they get their list from Rob Foskett, AT&T's California Alliance Channel Manager. 415-644-7128 direct. When Telco Concepts calls, go to Rob - it's the only way you'll get off their list (maybe).