This is posted as a CreepyPasta on r/Nosleep, but is it based on an actual event, so that makes it more creepy!
Rikke works in a very old building on a very old campus in Copenhagen, Denmark, so I imagine there are a lot more where this came from. The place must be full of ghosts.
Head over to The Horrible Wolf to read it! Emergency Call From Room 206
For more creepy stories, check out the Creepy stories page over here.