Yup, has happened to me. They wouldn't go too far out of Manhattan, midtown exactly, because they're getting ready to clock out and leave midtown. Was supremely annoying, in the rain. And I was only going uptown about 20 blocks. After three refusals, I wasn't so open about my destination when I just got into the next one. I was thinking to myself, "what a crock of sh*t, I can't get a cab between 4:00 and 4:30?! In Manhattan?!"