Taking your new medical billing and coding certificate out to look for a job is exciting. You comb over listings, find positions, send cover letters and get interviews. But then something curious happens. You go home and wait for a call from the interviewer which never comes. Ever wonder why sometimes you get the silent treatment from a prospective employer? There are a number of surprising reasons why you may not get called back. The good news is that most of the reasons why are not mystical. In fact, if you’re aware of the most commonly occurring mistakes, you can avoid them altogether and improve your call-back ratio.Yahoo! Hot Jobs’s Larry Buhl put together a list of the Top Six Reasons They Didn’t Call You Back. Read the list and take to heart the message so you can become a more effective interview subject and land that dream job.