Too many stages of interview for such a small Company.
How it sound to do a QUIZ on the 2nd interview? Not serious!
They ask the same questions on the 1st and 2nd stage of the interview. They are not interested in your previous experience, you skills and knowledge.
Through the interview process, they change their mind all the time and they don’t know what to offer you a perm or temp position. They need to be clear what qualities they are looking in the candidate.