I installed a.complete ac system in a customers house. He paid me for job then a few days later he put a stop payment on the check and told the check cashing company that he never wrote the check and signed a affidavit saying he didnt write check. I have emails and text messages with the customer and he talks about writing me the check and the stop payment he put on it. I dont know where to start to get my money and prove that he wrote the check and is lying