Customers and consumers are having more issues — and getting louder about them, according to a survey from late last year. The aptly-titled National Customer Rage Survey found that the number of U.S. consumers that reported experiencing a product or service problem in the past 12 months has more than doubled since 1976. The survey from Arizona State University's business school found that this could cost businesses $596 billion in revenue if customers continue to feel dissatisfied. "Defusing cus...