Dude, some silver bars are no big deal, i bet you got a gazillion in your chests, to do what with them?
Make the first step and show them that you are better than this, above, make them feel embarrassed.
If they won’t feel embarrassed then they are jerks, keep them as away as possible from your gaming time, simply avoid them, don’t throw boomerangs, you never know which side you look when it returns.
I don’t care about them, but for you.
I have a friend, a Greek friend like me, that he plays exactly the same way you do (which is respectful).
He gets upset when he sees people trying to enter his base, or they sleep in his stairs and sometimes exactly on his front gate 
. He starts worrying a lot for these situations…
Don’t do this. It’s a game!
I always leave all my doors open, i don’t care who comes or don’t, but guess what? Nobody comes, nobody blocks me, yet even if it’s going to happen i will leave before you understand it…
I play to relax as a guest on Funcom servers for free.
We all have the same rights, even trolls!