The sales department at DAT offers zero room for growth nor upward mobility. There are folks there that have been working in the same exact position 4, 5, 10+ years. It is a great entry-level position for someone who wants to get some real world experience in sales but not much else. Don't expect to be able to grow within this department because it rarely if ever happens and the folks with the longest tenure in this department will concur with this statement.
Aside from being a dead-end position, it's a call center environment so be prepared to take and make call after call after call, micro-managed, and overworked during your 40 hour weeks. If the call center environment is not what you envisioned yourself in then you probably wont appreciate it; it becomes extremely mundane in a short amount of time.
You have to work one Saturday every 2-3 months which everyone hates to do and seniority rules here so the newbie to the team will get the last pick of what Saturday they're able to work.
Overall, the only circumstances I would recommend working here is if you're applying to get entry level experience (and getting out within a year) or you're applying for some sort of tech related position. Either way, the turn-over rate seems very high at this company with folks leaving left and right on a weekly basis.