I ask a friend to remodel my bathroom for $3000 (there is no written contract) and paid him $2500 in advance to start. he quite after 2 month and did not finished job and put a $3000 lien on my property . We talked after that and we agreed that if I pay him $600 more, he will release the lien. I paid him $600 more (I have recipt that no balance left) and he agreed to release the lien. Now he is refusing to release the the lien. What should I do?