Fraud.
Bought a used car from him. The car started having tow major problems the first week: starter wont work and losing engine oil.
He promised to fix it. I went to him 3 times, every time he had an excuse not to do it. I have ONLY Saturdays off and he took away 3 of them (~2hrs each occasion) while he knew for a fact he was just screwing around with my time.
Ended up going to small claims court against a pathological liar.