Client turned nasty and refused to allow us to correct what she said was chipping paint on kitchen cabinets. I tried several times to go over there to fix them. She never took pictures, she just quickly sent the door off to someone else. She is refusing to pay the invoice, which included $2000 for work not related to the kitchen cabinets, and that she signed of on. Any way to collect the money without going to small claims court? Is material men lien appropriate?