I am SO GLAD that I read all of the information on glass door. Like others said, the interview process is very extensive. My interview was for 8:30, and I showed up around 8:25. There were about 50 or so people waiting, and I was informed that they conduct these job fairs every Friday. They interview for all positions during these fairs, so there were people from the warehouse, customer service, etc.
They first began by giving a numbers matching and number pattern test. They then called people up to interview. I'm not sure if it was random, or if they were trying to weed people out. I got called early on and interviewed with a rep. We went into a large space with several tables where everyone was interviewing. I couldn't hear anyone else. She asked me basic questions about my experience. I know that I did well because she told me I was going to the next round. If I didn't, I would have been escorted to the reception area. When I got back to the waiting room, it was pretty empty, so I'm guessing that they weed people out fairly quickly.
I then took a computerized spelling and typing test before interviewing with another rep. Again, there were even fewer people around for this. She asked me more in-depth questions, but nothing difficult. Be sure to ask questions about the company! She then told me that they were setting me up to shadow a rep and interview with another HR person. I interviewed with her, and then went into the call center. It was clean and pretty quiet. After I shadowed with her, I then had another interview with the Branch Manager. This was very simple. I answered basic questions and for the most part just chatted.
I then met with the HR manager, who told me that my potential start date would be in a few weeks. Of the 50 people who showed up, only 3 made it to be interviewed by the Branch Manager. As long as you are articulate, mention that you are organized and detail oriented, you should be fine.
Also, WEAR A SUIT!!!! I knew from reading here that the dress code is intense. This is very true. A suit will make you stand out, and as a woman it is an absolute MUST. I cannot stress how important it is to wear a suit. So many people in my interview were wearing jeans, or even a nice blouse. All of these people left after the first round. Appearance here is important.
UPDATE - After this interview process, I was contacted to complete four more assessments - personality tests and writing tests. Both were very simple. I had to send back the results. I was then informed that I passed this stage, and they asked me for references and information for a background check.