Is this global chat or map chat? What happens in the game stays in the game - unless it breaks our code of conduct. We do not police every teenager in our game calling another player some name.
If it spills over into global chat or becomes harassing this of course changes. Best is to make an email or an ingame ticket with possibly screenshots if said player feels that the trolling is moving into the range of harassment or threats - that way we can look at the case specifically.
"Going to war without France is like going hunting without an accordion." Gen. Norman Schwarzkopf