FabSoft IT Systems Implementation Specialist (Entry Level) interview questions

Arrived at location, place looks more like a factory than an office. Was given a written test on paper, some coding questions, I handed this in to the secretary/HR and she advised me a manager will come out for the interview. Manager walked in after 15 minutes and requested it to revise one of the answers on the assesment. After I was finished with the revised assesment I handed this in to the secretary, she came back a minute later and advised me that the manager was not busy and we had reschedule the interview. Most humiliating experience! no respect to a professional or to any person applying for a job, why not have the manager come in and cut the interview short if I was not fit for the position? As soon as I walked to this place I knew I didn't want to work here but I had some ethics and continue with the interview process.