First off, this is a fan site, so this isn't the place where you're going to find anybody that can do something about this.
Second off, there WERE official channels to report this kind of behavior, but I'm pretty sure they're no longer active.
More in detail, I messaged
enforcement@relic.com in 2022 using the reporting guidelines that were provided at
https://community.companyofheroes.com/coh-franchise-home/company-of-heroes-3/forums/2-welcome-info/threads/2-reporting-sanctions-appeals
I received a response the next day. I have been waiting for a month now on a response to my last report. I don't think they're taking them any more.
If someone has a more up to date post, go ahead and link it here. Otherwise, I'm afraid you're S.O.L..