We provided services for a customer that refuses to pay us. They moved out of state without informing us while we were painting the interior of the home. We have tried many ways through emails, texts, and phone calls but with no solution. The customer is now getting rude, nasty and threatening. We just want payment for the services we provided him and that is all. We even lowered the price to accommodate him but it has not worked. I heard we can file a Mechanic's lien but is there anything else we can do?