ServiceNow Developer interview questions

Applied for position through ServiceNow career portal. Engineering manager contacts me via email and requests for some days I'm available for a phone screen. The manager replies back and schedules me with a date I never said I was available for. I tried asking the manager to reschedule but never got a response, so I ended up canceling my plans that date to do the phone interview. I completed the 1 hour phone interview and never got a response afterwards! Extremely rude and unprofessional.