I had several telephone interviews with internal HR recruiter, who was quite nice and very professional. After getting through that round, I was scheduled for a follow-up interview with hiring manager. I took a half day of vacation from my current job to await the phone call. He never called. Later that day, I spoke again with a now-embarrassed HR rep who rescheduled another telephone interview. Again, the hiring manager never called, never emailed, never apologized or rescheduled. Very unprofessional. I withdrew my application. If these people can't keep appointments, I can't imagine how they bring projects in on time.