Hi! I'd like to report 2 cheating characters

Name: Claris1, Xyzz3
Cheat: Disconnect people, teleport
Location: cross forest F7
Time: around 7:45 am PDT

Description: they challenge people to pvp, and if the one challenged dont respond they get disconnected from the server. I tried accepting the challenge but within 5 seconds after killing them they reappeared in the same spot. Please respond GM thanks