Personally I would not work there.... 1. Being early for an interview IS good. I am baffled that she yelld at you and then had the nerve to keep you waiting without an apology. 2. Three weeks is not enough time for any employer to ascertain the competence of a new employee. I would worry about the people working there. I would only take the job if I felt that I was already 100% confident in my skills. Either way.. three weeks is not enough time to get up to speed with what is going on with the facility.. company policies.. etc. I have found that the most amazing jobs I have ever had are at facilities that start with you from scratch, show you the nuts and bolts of the entire operation and encourage you to spend as much time on orientation as you need to feel comfortable in your job. Good luck!:)