Third Bridge interview questions

They had no structure to their interview at all, and asked me hypothetical questions like 'what would you do if you had to find confidential information on South Africa' - it was something along this line, and they kept 'refining' it because I would challenge them on their question, as it seemed completely made-up (as they would take time to pause many times)!! this was supposedly a case study. They also had no even glanced at my CV beforehand, and did not know my name even. They were unprofessional. I did not know what to think of the experience, it was completely bizarre.