MyTutor Manager Position interview questions

Process was fairly long, stretching over 2 months. The majority was 30 minute calls with various people in the business. On the third stage I was asked to put together three different case studies which was time consuming, but was happy to do. I made it through to the final stage with good feedback throughout. I didn't receive an offer and was given no explanation as to why, despite me following up. Disappointing and due to the amount of work they asked me to put together, I expected more. A friend had a similar experience, but did not feel comfortable to post.