Guess? Analyst interview questions

I was contacted through email about an opening for an analyst position. We set up a phone interview however on the day and time of the interview, I received a late email stating that it needed to be rescheduled. That was fine with me and I replied back twice with a new time and never heard from the HR coordinator again. This was very unprofessional and a courtesy email stating they found someone else or were not interested would have sufficed.