I would get the guy fired. I wouldn't complain or anything, but I would say he keeps trying to sell me drugs and always stops me when he sees me. Though that may give him motives to steal your snakes. Best to avoid him or if he has to come back then follow him and when he starts snapping photos start snapping phones/tell him to leave.
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If the goal is to get him fired, I would take the route of complaining about the things he actually did do. Lying to get someone's job taken away isn't something anyone should be comfortable with.