A lot of good answers below already so I won't state the same things again. I do want give a different insight though. 9 out of 10 times, HR is waiting for an a

A lot of good answers below already so I won't state the same things again. I do want give a different insight though. 9 out of 10 times, HR is waiting for an answer from the Hiring Manager/ interviewing team/ department head/ etc. Just because HR (or; recruitment) is your main contact point (or; messenger), this doesn't mean they are the cause of the delay. (there is no excuse for not communicating that there is a delay, or nor answering your call of course). In your case; contact a different person from HR/recruitmment or the interviewers, just to make sure your contact person isn't on holiday/sick leave/ fired/whatever. I'm afraid that's the only thing you can do. If your contact person is still working there but not responding, odds are high you didn't get the job. (still push for receiving feedback though).