I hear ya man and unless dying or dead, there`s NO excuse for no contact................PERIOD! I did an engine swap years ago for a "Friend" who took the car and would pay me the next day.................that was 10-12 years ago but he DID call telling me I will never get paid and that I would never find him. Within 24 hrs. I knew where he worked, lived and the lic. of his car. I let it go cos if not it would be a mess and I`d be in prison. I love street justice but the "Law" can possibly help as stated earlier. I`m glad some of you have trusted me w/your parts and $$$ and I will NEVER let anyone down intentionally and if there`s an issue I would HOPE you would contact me before a post like this ALTHOUGH the op`s issues are understandable. Good luck.