yeah. like loka said. the first time, to make sure they understood, i would freeze them once the round started, and explain to tem that it wasn't allowed. then slay them for that round and if they do it again ban for 30 min. you should also keep a list of people you have trouble with. just a notepad document or somthing like that where you can record ingame name, steamid, sentence (and how long), and brief reason, and a checkmark for each time it has occurred. That way you'll be able to quickly check to see if they've been bad before. and if so, that means they still haven't gotten the messege.