Cadbury Adams USA interview questions

I advanced to a phone interview with the hiring manager after passing the initial screening interview with the Corporate HR recruiter. She asked me very basic questions like "Walk me through your resume, why Cadbury, etc." Half way through our conversation, the call dropped. I called and emailed (twice) the hiring manager immediately so that we could finish the interview. She didn't pick up or respond to either email. It wasn't until the end of the day (7 hours later) that I received an email from her. She mentioned she was unable to connect the line. I understand she may not have felt I was a fit for the position, but her behavior was unprofessional and speaks to her lack of communication skills. If she didn't want to spend more time with me on the phone, she should have just come out and said that she didn't feel I was a fit for the position.