World Health Organization interview questions

I applied online and 2 months later I received an invitation email for an online written exam. I took the exam, 1 month later I had a phone interview with 3 interviewers.

Asked to take part in phone call interview about a month after I had applied. Never heard back after it even though we were down to the last few candidates. Poor form considering that at the end of the interview they said I would be told if I had been successful after a month or so. Online I can see the position has been filled. Very disappointed as I expected better from the WHO.