FLSmidth|FLSmidth S.A. React FullStack Developer interview questions

Very worst behaviour from the panel. They were not ready to listen what I'm saying or not ready to completely hear what I am trying to say. Keep on saying the term "It's not rocket science " called out my name three times on the trot if I say the same they get riled up. Interviewer doesnt any technical knowledge and still questioning me and unable to understand what I am trying to explain.