Guild Wars 2

If there’s no option for it in game, then just roll over the “Services” tab at the top of the page here then click on support and report the user there.

I don’t really see the costs as an issue at all, though yeah it costs just about as much or so, to teleport to around where an event is, then you pretty much just get the silver back, all I can say to that really is simply don’t teleport down there then.