F5 Marketing Communications Manager interview questions

I had an initial phone interview and was chosen to meet with the hiring manager in person at the F5 office. The office was easy to get to and parking was good. They validated when I was done which is a plus. The interview lasted an hour. The hiring manager said they would get back to me in a few days. When they didn't follow up, I sent a note to the HR contact. She never got back to me. I've written them off since I haven't heard back. It is common courtesy when coming in for an in-person interview to at least mention that it was the end of the line...but nothing.