I went to work for Aerotek too, in June of this year. When Aerotek called me for an assignment, I was told that it was in a purchasing department, so I made it very clear to them AND to the company they wanted to send me to (during my interview with the company), that I was not a purchasing clerk, and that I had only worked in a purchasing department for a few months doing admin support duties on a previous temp job for another agency.
I was also told that it would only be a 3-4 months position by both Aerotek and the company, which I agreed to because I also had made it very clear from the very start, when I first applied to Aerotek, that I was retiring in a few months, and did not want to commit to any assignments for longer than that. I also made all of this clear to the company I would be working at during my interview with them. As I worked at the assignment, it became apparent after only a month, that it WAS a purchasing clerk job, and I was given more and more purchasing clerk duties; however, I continued to work and learn the job, and was complimented several times by the company that I was doing a great job; however, it became more and more stressful because the company piled more and more work on me so, after 4 months, I asked for a $1 more an hour raise because I had not been earning the standard purchasing clerk salary for my area. I asked for the raise in writing, and received a response from my representative that she would "check" with her supervisor and get back to me.
I asked again several times, and was given the run around every time. After 6 months, I still had not been given a raise and there was no end in sight for the assignment and it was becoming more stressful everyday.
I had planned to stick it out for a few more weeks, until the last week of the year, but because the job was so stressful, and Aerotek was not backing me up by giving me the raise I had asked for 2 months ago, I quit. I would not recommend that anyone work for this agency.