I'm going to play devil's advocate here for a moment, because I for one can see both sides of this argument. First off, I commend you (OP) for trying to be civil about the matter when asking this higher level player to politely consider hopping worlds since you and your friend were there first. However, at the same time, getting upset with this player is uncalled for. Yes, "crashing" is annoying, but then again, the Mole is not solely for one person, is it? If his presence there was that much of a bother, switching worlds takes only a few seconds. I'm not saying him being a higher level entitles him to it, more so that if one party refuses to leave, the other should and be on with their activities. After all, this area is multi-combat for a reason.