Hello Derpest.Sam, welcome to the forums!
Thank you for your report. Our team can investigate reports of players who are cheating or not using appropriate behavior online in our games. However, to look into these we need to receive a support ticket reporting the player along with some proof of the incident. If you can provide this, please open a support ticket at support.ubi.com and attach a video or screenshot of the proof, the player's name, and the time of occurrence. The team can investigate from there. Thank you!
Also, just to let you know, I edited your post, as naming and shaming is against forums rules. Thank you for understanding and if you have any additional questions, please let us know.