Beat a guy and got called a hard R, pretty straightforward

Hey whats up, was having my friend teach me how to play since I got interested in learning yugioh. Played against someone with the name of Jeff Francoeur. Long story short he ended up calling me some racist slurs in the chat and was extremely upset over his lost. This was our 3rd time getting matched up against each other and I was nice and stuff and was chill, come the third game…well you see what happened when he lost.