Replying to Callout: STEEZY*McSTEEZE

I traded with this kid from ontario almost 2 months ago and still havent gotten what i traded for. i traded my 5xl jiberish bozz for his 3xl ignant and i still haven't got and now hes saying that he called the post office (without a tracking number, he said he dint get one) and said that i got the ignant. Hes also sayin that he never got the bozz, it's complete bull shit. I still have all the receipts and customs shit. what can i do?