Questions about a bank loan.?

I was informed by my bank that I was denied a loan due to delinquent credit history. I found that funny considering I just got a car loan on good credit. Not super duper good credit, but good credit. And when I ask about what delinquent payments, she could not answer me. So i'm good enough to be a customer there with my money, but not good enough for a loan. Am I missing something here?