Bruh this isn't league of legends where it clear cut text logs only. Admins can't sit in every location on the server 24/7 waiting for people to break the rules and they certainly can't ban people just based on peoples word alone. There's nothing you or anybody else can do to change the current system other than admins can be more active. But seeing as admins have lives as well and are not payed to run this server, your shit out of luck.