Linear Systems interview questions

I found the job posting through craigs list so flags should have immediately gone up! I sent my resume to Linear in January. Got contacted to come in for an interview. The people that interviewed me were 3 people, (Owner, Head Software Dev, and IT Rep.) They asked me various questions about my background (mainly software questions). The owner insisted I come in for a full day experience of the company. I decided to go in on a Tuesday the following week. (Note: I took a vacation day for this!). I arrived promptly at 8:30 am as I was told. I waited 30 minutes until the Head software dev arrived. He walked me through some of the programs they were working on and what i would be doing if I were hired. After about an hour and a half I had seen everything there was to know about Linear. The head developer then began to show me wallpapers on his computer that i was not interested in. He was wasting my time! I was so irritated by the man that I walked out. Overall, I would suggest people to avoid working here.