CarMax interview questions

Applied online and got a call from HR about two days later to set up a time for a phone interview. The Operations Manager called on time and immediately went into questioning. This is when the interview took a weird turn. She asked very basic interview questions and would rush to ask the next question before I could even finish with my answers. At one point cut me off 5 seconds into an answer just to ask another question. When I asked a question about the job she stated it wasn't her department and she really had no idea. The interview lasted 10 minutes. It was very unprofessional and seemed as if they weren't actually interested in filling the position.