Should I call HR if they are not responding to email?

Hi all, I had my final round interview for an IB internship 2 weeks ago. 1 week ago I called one of my interviewers to enquire about the expected timeframe before hearing back. I was told they expect to reach a decision by the end of that day and that I should hear from HR either end of that week or beginning next week (i.e. the current week). 3 hours after I got off that call, I received an email from HR asking for my passport scan. I sent this and have not heard back (I am a citizen in the country I'm applying for). I sent HR an email enquiring my current application status 2 days ago and did not get a response. A friend of mine applied for the same internship and got a rejection email 2 days ago. Should I call HR to ask or will it be annoying since they already didn't reply to the same question via email?