Phone interview with HR, in-person interview with 3 people. Everyone was very nice and the interview went well. Contacted by the same HR person in a couple of days who said that the interview went well and they will be reaching out with in offer within a couple of days. I contacted her in a few days as a follow-up and because I had 2 other offers on my hands, but never heard from them again. Can't believe how unprofessional the HR department is. If you changed your mind and decided not to make an offer, or even if they didn't like me following up - an email notifying me they won't be extending an offer would be nice.