If you do not want to see any messages from a particular player, click their nickname in the chat and press the Add to blacklist button.
If you believe that the player's behavior in the in-game chat violates our Terms of Service, you can report them to our Support team. Make sure to attach a screenshot of the message and the ID of the player who left it. Our specialists will review your inquiry. They cannot disclose the investigation results due to the user privacy policy.