My Confusion and I

A couple of weeks ago I went to a assessment day for a job I didn't particularly want but I thought that it might be good to get the experience. This company that hosted the day (let's not mention names) asked me if I was able to go down to London and as a keen applicant I agreed. One of the few reasons why I agreed was because I had to go through 2 phone interviews and they seemed super keen on having me there even though it was very obvious this was a fake excitement. Regardless, I went down to London before the sun was even up just to give this place a chance. When arriving to the office I did everything according to the books. I smiled, was polite, took initiative and showed them that I am clearly the right person for them. The assessment day went on as I had expected due to all my coaching and reading reviews online. It was all going well until the presentation I had prepared. Even though I shared everything I wanted with them I realised that it didn't matter how well