I was approached by a recruiter at my University's Career Fair. After chatting for several minutes we set up a first round interview for two days later. This interview was strictly behavioral and about the position itself. They mainly want to see if you are personable/can carry a conversation, and also if your qualities match up with the job description (hard working, competitive, outgoing, etc.).
Next was a second, onsite interview. This consisted of meeting with 3 different people: the first is the head of the particular office you're interviewing at, and the second two were established account managers. They want to really be sure that you want to do sales and that you are outgoing enough for the job. They could care less about your education.
The third and final round was a lunch interview with the head of the office and another account manager. This interview is all about your personality and your ability to carry a conversation.
My interview process only took 2 weeks, and I received feedback very quickly after each round, except for my final round. The way this company works is they recruit pretty much any person who shows interest in the job; not a very fulfilling experience.