You wouldn’t like BlackBerry CEO John Chen when he’s angry. Ever since Chen took over as BlackBerry’s CEO he’s taken an aggressive stance against anyone who disrespects his company, whether they’re smarty-pants bloggers or Ryan Seacrest. Now Chen is calling out wireless carrier T-Mobile, which angered BlackBerry fans recently by sending them targeted promotions encouraging them to switch to Apple’s iPhone. “I can assure you that we are outraged [by the iPhone offer] too,” Chen writes on BlackBerry’s official blog. “What puzzles me more is that T-Mobile did not speak with us before or after they launched this clearly inappropriate and ill-conceived marketing promotion.” Chen also took the time to thank BlackBerry’s loyal fans who have been “expressing your outrage

More...