Sorry for your trouble. I hate jerks.
But your scenario sounds like he's broken the law. You ordered a product I assume the vendor advertised. He delivered something entirely different and then refused to make it right.
I'd contact the ATF and FTC.
Maybe nothing would result but it might be worth a couple of phone calls.
"I say, boy, I say, you're doing a lot of choppin', but no chips are flyin'."