I understand your point, but unfortunately Funcom has stated again and again that they will not interfere in cases like that. Some of your options are:
- Get organized and gather enough resources to blow their stuff up and then set up your own choke points.
- Move to a different official server and hope you don’t run into anyone like that again.
- Move to a private server.
Just out of curiosity, did they simply wall off the Shattered Springs or did they actually block up all the other sources of sulfur?