Why are property management places so... lazy?

I hate to use the word lazy when it comes to a business, but I have been searching for a rental for a month now and I am so frustrated I can scream. I have had them return emails telling me to refer to their website when I have stated I found them on their website, and had a question. I have had them not show up for their own scheduled appointments to view rentals. And now I am having one string me along -- saying that they will have a result for me in fifteen minutes... that was 4 hours ago. Now I get to wait until Monday to call them up and find out if I can move. Meanwhile I need to put my thirty day notice in and it goes on and on. It's not just one property management place. I've dealt with four. I have not had one positive experience yet.

Is this normal?!