How to deal with a powerful college classmate who is always defaming you?

[neku]

Some of my college classmates are very powerful, they hate me, have never contacted and are always spreading fake defamatory rumors, to ruin my reputation which causes great financial losses, What is the best way to stop the damage they are causing?

 

[eLdavis]

The best course of action i would take is to report the issue to the authorities so it can be sorted out by the law.