You are. Ganking in a PvP server is part of the game. Playing in one is virtually saying you are okay with being random and openly attacked by the opposite faction at any moment or situation where the game allows it. You can't sign up for something and then complain that when it happens it's harassment. You are completely free to go to a different area, play a different character or even take a short break if you're getting frustrated.
They have a character unstuck feature on the website that revives you and spawns you at your hearth location. So getting constantly camped by someone can be completely avoided.