If you are a corporation, you can't use small claims court, you have to use commercial claims court, which isn't as convenient. If you have a collection agency go after them, they need 5 unpaid bills. They only expect to collect on one out of five. They have to be at least $500-1,000 each. They split what they collect with you 50/50. I've paid lawyers to send collection letters, works about 40%. If you get screwed and collect more than 10%, you are doing good. Not paying your bills isn't illegal. Harassing someone who doesn't pay is. Be careful.