Performed 3 weeks of labor sanding the wood floors in a home. When time came to stain and finish the floor, the customer became too difficult to work with (couldn't pick a color, didn't want to use the products we normally used, wanted me to use their products against manufacturer specifications, and then walked all over our prepped floor with dirty shoes setting us back another couple days)so in frustration I told him to just find someone else to do the stain/finish since he didn't want it done the way we do it and he could just pay us for the sanding. Now he's refusing to pay anything at all.