Duke Energy Communications Manager interview questions

I applied online for a communications manager position with Duke Energy and was contacted by the hiring manager in the corporate communications office, which is in another state, to set up a phone interview for a later date. We were scheduled for 45 minutes but spoke for about an hour on the appointed date and seemed to hit it off quite well. At end of the conversation, she said she wanted me to speak with her supervisor, and she set me up to chat with him for about a half hour. She also asked me to send her several work samples, which I did. My conversation with her supervisor, which occurred about a week later, also seemed to go well, and he said the hiring manager would be in my area in next week or two and asked about my availability to meet with her in person. I never heard back, so I called the hiring manager, who was in my town, but said she was interviewing other candidates in person and might contact me. Nearly a month passed with no further word, so I checked my application status online and found it was still listed as open. About another month passed with no further word, so I called the hiring manager, who indicated there were no further updates. About a week later (nearly three months after the process began) I got an e-mail from her saying they'd selected another candidate. Overall, I was surprised and frustrated by the lack of communication and length of time it took to learn anything, especially from a public relations/communications office.