That happen to me. And the guy who wouldn't leave me alone would say "You will rue this day!" >.> He kept trying to get me out, but I was just pretending to be afk. Then he logged off and I blocked him, I literally said 'Bye-bye' when I blocked him. >.<'
But, yes, I hate den and 'territory' claimers... They're annoying, and sometimes I don't think it's that worth it to be fight over some silly thing like a den or territory that doesn't even exist. (Unless it is a map they made)