We're glad to hear that you've had a good time on our server, on the other hand it's a shame to hear that people are breaking the rules.
In order to keep track of the rulebreakers, we need our players to report them. It's best if you report them straight to the owner of the server so that he can punish them accordingly.
donPablo's steam: http://steamcommunity.com/profiles/76561198025261596/
Or, if he is not available, check out our steam group: http://steamcommunity.com/groups/ClydesHill and one of the admins will gladly handle your report.
Also, it's recommended that you report them as soon as you spot them, to avoid any data loss.
Thank you and enjoy your stay!