Tempers flared at airline offices in Caracas on Friday as Venezuelans reacted angrily to international carriers’ refusal to sell tickets after the government devalued the bolivar for flights abroad. The offices of American Airlines, Delta, United and Panama’s Copa were all either closed or had halted sales on Friday as the higher exchange rate took effect, adding to uncertainty as carriers try to collect $3.3 billion they say they’re owed by the socialist government. “Don’t waste your time,” a United representative, sticking her head out from behind a closed glass door, told a group of 10 waiting customers standing outside a ticket office at Caracas’ Centro Lido shopping mall. “It’s out of our hands. We can’t sell any more tickets.” When customers protested that they’d never experience such poor service in the US, the agent, who didn’t identify herself by name, said “our […]