You are doing more than mic spamming you are insulting every person you come across and laughing about it with your friend. There are unwritten codes of sportsmanship, just because it's not in the MOTD does not give you carte blanche to trash talk people who are new and learning the game. Also you were given a 2nd chance and that should make you to be behave more cautiously but it seems you are unappreciative of that chance. Your attitude coupled with suspicious play style would be enough for me to reban but it's not my server. I offer this opinion as a semi-regular on the server. Do what you think is best admins.