>>420310027
Start a votekick. Then, find the instance owner and inform them. They will take care of it.
And if they don't take care of it, the instance will get overrun with randos soon enough and that's the point where either the owner wisens up or you leave the instance.
The real problem happens if you're in an instance with some of the more "integrated" randos. A votekick won't pass and the instance owner might not want to start a fuss by kicking them.