Muttville Senior Dog Rescue interview questions

I had a terrible interview. I went into the interview with a Muttville shirt to show my enthusiasm for the company and a binder that included examples of relevant experience/my resume. I was grilled for TWO hours by three different employees at the same time who asked the same questions in different ways. I was then taken upstairs for a tour where I was introduced to the founder and other employees. Didn't get the job. I am not saying wearing a shirt I got from the company means I should have been hired but it was a very difficult interview for a job paying $16 an hour and someone who would basically clean up cages.