I don't think you need to threaten Michael. See what he does first before you throw that last line in. You're coming across super defensively. The way you approach people can many times lead to the outcome. The first part obviously shows a different snake. Send that and see what he replies with. Give him a chance before you start threatening BOI threads and such. Just my $.02...
Regards,
B
I was going to say this as well. The OP made him out to be a crook before the seller even had a chance to rectify the situation. Just calm down and let him make the situation right. If he refuses to do so, then the gloves come off!