BIL Internship interview questions

I applied for an offer but the HR directed me to another position because she thought I was a better fit. She complimented me and said I had a good profile for this internship. I accepted but they didn't give me much information about the internship role except that it was in retail. They threw me in cold water for the interview. It was with a head of retail banking and she asked me difficult questions like what is the difference between different types of funds. She never let me finish speaking and never accepted any answer and always reframed it. I could not prepare properly for this interview and I embarrassed myself. My confidence dropped significantly because I felt stupid although I had exams about these concepts and passed them successfully. It was my own mistake accepting the retail banking interview even though I applied and prepared for 2 weeks for the other one in client services. I learned my lesson not to accept such things without being 100% sure about what I am getting into but on the other hand there should always be a job description and details about the internship. I finally withdrew my application. I honestly think that she was disrespectful during the interview.