Customer has a history of contractors he "can't call, won't contact" to fix obvious problems. Alway's said "No, we want you to fix it." After six months of working on his "addition" and being inundated with change orders unrelated to original scope of work, offered to complete current phase of work and terminate relationship. Noted deterioration of communications and duplicity which made the relationship difficult. This triggered a vindictive attitude, complaints about work, obfuscating materials from our vendor, and the partial payment for 27% of due invoices. Rapidly applied pressure to Lien status within and responded to customer complaints with 12 page registered letter describing his unprofessional duplicity and habits of "theft of services."