Aerok Staffing Sandoz Lying / Scam Broomfield, Colorado

I apply at this website for a temp position with Sandoz in Broomfield through a Aerotek Staffing. Filled an application and they called me in for two interviews and I did all the pre-employment forms for background check and ssn etc at the company which seem legit. Then they said they will call me within a week. I thought I had the job, and waited for one week, no call. So I call them to see what is going on and when I start, the number of the agent who call me first to interview "is no longer there" and the person who ask me to do the background check is not answering any of my calls. I left numerous messages, and finally after three week she call me back and said, "unfortunately at this time they are not hiring for the shift that I apply for but she need to fill the other shift first" I was so confused! If they were not going to hire me why do those interviews and paperwork in the first place? I just didn't understand! I asked how long before she will know when I can start and she gave me a vague answer stating she can guarantee anything but she'll call me back when she is hiring for that shift. When I ask if I can do the shift she is hiring for she told me no she had enough people. WTF?!? I am so mad and it is all a waste of energy and money...ARGGG. I am pissed that I even apply with them in the first place. Please stay away from that temp agency not even sure they are legit.