Staples Easy Tech Expert interview questions

I was called to interview for the ETE position, and was first met by the assistant manager of the location that I had applied. He was a nice guy, asked the standard questions about past work experience, and did a little role play. If a customer comes in to buy a laptop, what are you going to try and add on to the sale? Things of this nature...This interview went well, and I was called back a week later to interview with the general manager. It was in his office that I met with him 1:1, but the district manager was also listening in on speaker phone. Once again, they ran through different scenarios such as what I would do if there were an unhappy customer. I was caught off guard by their unsatisfaction with my answers, as they kept prodding me to go deeper and elaborate on things (I thought I had done a sufficient job). It was for this reason that I thought I blew it, and was not going to get a call at all. To my surprise, I was called about a week later, and offered a position. I'm excited to start with Staples, but the interview process was a little longer than I thought it should be.