100 bucks is a tough lesson, but you did say your answering machine was out of whack. That's a hook he can use for an excuse, but the clown must be pretty sloppy to arrange a drop without keeping in touch with you somehow. How about this? you ask for your money, he gives you some half assed story, you let it slide, end up selling to him from time to time, and eventually you gouge your money back, plus interest.

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