“Thank you for calling. … You’re speaking with Renzo. This call may be recorded for — uhm — this call may be re—” Renzo Bahala, a customer service agent for a U.S. credit card company, breaks his monologue. If he were at work, he would’ve earned a demerit. “I have to say it straight. If I stutter, I have to do it again,” he told Rest of World as he rehearsed the script he uses as a trainee at Concentrix Corporation, a business process outsourcing (BPO) firm that employs approximately 100,000 peo...