Grainger Sales Inside Representative interview questions

I walked into a store environment, and there was no one I could approach to let the interviewer know I was in, except a very long line up at the front desk with customers. No reception into the office, no general help desk, and no free personnel to ask. I ended up waiting in line with the other customers, as a result and the interviewer had to come out to greet me. Felt a little awkward given my interviewer was asking me questions that most would not ask in regards to why I left the companies I worked for. The interview felt like he was just going through the paces and not really challenging me or asking questions relevant to the position.