Paychex interview questions

I had a phone interview with outside recruiters and let them know my salary requirements. I then had a video interview with the manager of the department that went well. After, I felt the role was not a little too technical so I emailed the recruiters that I didn't want to move forward in the process. They called a few days later asking if I would reconsider. I agreed and was moved forward to the third interview with another manager (that was scheduled incorrectly but we made it work). I was then scheduled for a 4th interview where I needed to make a presentation to three other leaders. After a lot of preparation, successful interviews, and a 3+ week process, I was not given an offer because "they could not get passed my salary requirements." I understand this as an issue but this was discussed after the first phone interview and then understood when they asked me to continue with the process. The entire time the recruiters were coaching me and cheering me on while making it clear I could expect a job offer. I do think this could have been from working with new recruiters but overall a disappointing and discouraging experience for a candidate.