Popular do-not-call list bringing industry to its kneesAug. 11 — In the past three months, the hallways at Groesbeck-based Tel-A-Sell Marketing Inc. have become a lot less crowded. CEO Edd O’Connor has been forced to trim his telemarketing staff from 72 to 18. “I WAS RUNNING a full house earlier this year,” said O’Connor, who also serves as president of the American Teleservices Association’s Great Lakes Chapter, which covers Ohio, Indiana, Kentucky and Michigan. One of the big reason for the cuts: the chilling effects of the National Do Not Call Registry and other similar efforts in statehouses across the...