It's a bad sign if no one is taking your calls -- even if you're paying them. Say your wedding planner quit, the cake designer won't return your e-mails, and your caterer just sent you a refund check and a note asking not to be contacted again. Sure, maybe you're right -- they're all incompetent -- or perhaps you're being a bit unreasonable. Still can't figure it out? Think about that last message you left the poor florist. If you're expecting good service from your vendors, you need to treat them like the industry experts they are.