Paycom New Client Setup Administrator interview questions

I was contacted via telephone a day after applying by a recruiter. I was directed to take 3 assessment tests. I took a 10 key test, typing test and an excel test. I did well on each. I signed an agreement that I had no felonies or traffic violations. The recruiter called back the same day and set up an interview. Upon arriving, I took a math and reasoning test which was fairly easy. It was timed. I was interviewed by two people separately and then the recruiter came in and offered me the job contigent upon a drug screen, background check, credit check, and reference checks. I received an email the same day as the interview regarding a medical collection against me and was asked by HR to address it. I received a phone call the next day stating they were retracting the offer due to my credit report.