Discovery Learning Center interview questions

This job was posted on edjoin.org, and viewable on Indeed.com. I submitted a resume and cover letter through enjoin. I was called the next day by a woman wanting to set up an interview, but first she wanted to tell me what the position entailed. Unfortunately, the information she gave was often vague, ambiguous, delayed, and she did not have straight answers for my fairly simple questions. She was also extremely unenthusiastic, as if she did not even like working there herself. It was a very strange phone conversation, but got even worse when, after setting up an in-person interview with me for two days later, she called me the next evening to cancel the interview because she had hired the person she had just interviewed. I've never experienced such unprofessional business practices before this, and I was appalled.