GenScript Intern interview questions

Interviewer did not read my resume before interviewing me. Seemed unprofessional in that sense. They also seem to be looking for interns to do cheap labour instead of focusing on growth and learning, as they asked me about my willingness to work overtime and on weekends while requesting that I complete the internship during a school term. Moreover, when I mentioned that I had some experience with primer designs but not fully confident, the interviewer gave a disappointed look instead. Is this supposed to be an internship or a junior/senior role interview? Please align expectations accordingly.