ADP Client Support Specialist interview questions

I submitted a resume online, then a week later I received an email invitation to do an assessment, another week later was invited for a phone interview, and then a week after that I set up an in-person interview. It seemed like the process went well, and the interviewer was personable, but didn't really ask any hard hitting questions. I checked the status and found a message stating "It's been determined that your background is not a match for the requirements set for in the position. We wish you the best in your career search." I find this message odd because the job description states that only a High School diploma is needed, and no previous experience is necessary. (A personalized message would be more effective and more respectful to applicants that spend a month going through the process with a company). On top of this I have many years of customer service experience and a Bachelor's degree, and also met all of the preferred requirements. If you receive an interview with this place, do your due diligence in building up other employment options, because a lot of your time will be spent waiting around to hear about the next step with ADP. I had no way to contact my recruiter or the person I interviewed with, so there is lacking communication from ADP in that regard as well.