I had a job interview 2 days ago and today they called but I missed it.?

What should I do
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Call them back. If they didn't leave a message, then call them anyway and say you are following up on your interview. If they say they called to let you know that they hired someone else, tell them you appreciate their time and to keep you in mind in case anything else opens up. If you speak to the boss directly, even ask him if there is anything you can work on so you can do a better job in your next interview. Bosses usually get this question, so don't be afraid to ask.
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Hi Donnie,
Return the call ASAP. Given today's technology and fast-paced life no employer or human resources director is going to hold it against you for missing a call. They might though if you fail to return the call in a timely fashion. Best of luck with the job search!
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You missed the phone call? Call them back.

or You missed the interview? Call them back.
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You need to call them back obviously if they called they had a reasond for doing so, call them back and find out :) good luck!
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You should call back and apologize for missing the call!