Alliant Systems Technical Support Representative interview questions

Started out as an on campus interview for an internship, the interview was shorter than most. The interviewers were kind of dry with not much enthusiasm. I was offered the internship a few days after (the internship is around $16/hr). I informed them I would love the opportunity but I was in the middle of interviewing with other companies for a FULL TIME position. They responded quickly saying I could come on site and interview for the full time position if I wanted to. I decided to do just that... weeks and weeks go by without an email regarding the position. The other companies didn't work out so I felt comfortable knowing I would at least have an internship (I had a deadline to meet for my degree). I finally decided to email Leslie and ask what their thoughts were. She informed me I didn't receive the full time job. So I emailed back saying that was perfectly fine, but just wanted to double check I still had the internship. She responded back quickly again saying "no, we have decided to offer you neither position". COMPLETELY UNPROFESSIONAL When you offer a student an internship, something that is required for them to graduate on time, and then decide to take it away... something has to be wrong. I was very kind, excited, and genuinely happy to be on site for the interview. My tech background completely exceeded the job requirements. It made no sense. Just so unprofessional- stay away unless you want to be working in 1 of 10 cubicles for the next 15 years of your life with 0 advancement opportunities.