A very hard lesson learned. The police here is not gonna move unless you have documents about it to prove that he really owed you money. Unless you ask him to give you post dated checks, that can be possible. So he will be obligated to pay you. He is not answering your calls? If you know his place, go and meet him. But that kind of issue, good luck.

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"Admit your mistakes...before someone exaggerates the story."