You're getting trolled by the enemy team. But oh no! Mute isn't working!
(Humor me for this topic.)
Say you're up against what could only be described as "complete assholes" on the enemy team, but for some reason or another, the mute functionality is offline, and all-chat is forced on (you can't turn it off). Thus you can't shut out what they're saying.
What's your reaction? Troll back? Try to ignore them?