PepsiCo Mrchandiser interview questions

Had a brief phone screen and was actually skipped to the final round because the recruiter felt I was very qualified (I have a college degree and have years of grocery experience). I had a panel interview which I was asked roughly 4 very basic HR mandated questions that anybody could answer. Now, I answered the questions very well and came across well. You can call this sour grapes but I was not made an offer and I am thinking it is because I am over-qualified. I am a hard worker and physically active, this work would have been a piece of cake for me. My guess is that this company is looking for dim-witted "yes" men and women who will not question things and just do as they're told. I had asked about what the steps were to move up within the company and I am thinking they felt threatened by this. Frito-Lay, don't you think it would look good for you guys to say that you have college educated employees in such a low level position? All of my e-mails to ask about what went into the decision have gone unanswered, which to me is unprofessional. You are well within your right to ask a company what went into their decision, especially when the recruiter skips you through to the final round after a phone interview.