Dimension Design Buyer/Planner interview questions

I received one phone interview that lasted about 40 minutes.This led to an interview in person. Interviewing with 5 people for 2 1/2 hours I thought to myself that things were looking up for a potential second interview and a possible offer. I waited for over two weeks before contacting HR. Their response was the company was moving in another direction. Usually this means they could have an internal candidate (I could accept this) or found an acceptable candidate through the interview process. A couple of weeks later they have the Robert Half Company looking for a person to fill this position. Why waste time interviewing people. Also, inform the candidates you bring in for an interview that they are out of the running. Talk about lack of follow up. Wow. Disappointing, they did me a favor. Thank you no thank you.