Paychex interview questions

I applied online and then received a phone call from someone at their headquarters who asked me some basic questions and then emailed me a skills test which I took online. I got a call back saying I passed the test and said she would have someone from the Columbus office contact me for an interview, which she did. So I went to one interview in person where I was interviewed by two supervisors. I received a call about a week later to come back for another interview where I took a personality test, sat in with a payroll specialist and observed her working for about half an hour. I was then interviewed a second time in person by two different managers and finally interviewed one on one by the branch manager. I felt that the interviews went well, I know at the final one on one interview I got a little nervous because the person interviewing me was very serious and intimidating. I received an email about a week later saying they were not going to offer me a job. I'm not sure why I didn't make the cut.