Unauthorized Teleport Into Private Setup

Even though I have teleport permissions for other players turned off, random players who are not my friends keep teleporting directly onto my location and custom objects in spots that are normally unreachable. I am just trying to test my own Quick Drop setup and these random players suddenly appear out of nowhere and get in the way.
When these random players show up, I have to stop everything and delete my setup because it becomes completely unusable. They are insanely annoying and ruin the entire process.
This is extremely disruptive and needs to be fixed immediately.