[Nin9r]

Hello ! I have a big problem with some trolls on my server. They spawn vehicles, drop some players in random locations etc. Also, they are flooding my server because it will be stuck for few seconds and after it many players will be disconnected. I told it to the host team but they answered that is a GM problem. I don't think so because they are flooding our server+forum and then aren't connected on server. What can I do?
A good anticheat to stop spawning/dropping players. Any advice to protect our site + server against those su**ers?