https://medium.com/inside-the-simulation/phone-calls-from-the-dead-1894a40245e9
Everything is energy, so perhaps somehow calls were made from anther frequency or dimension.
https://groundzeromedia.org/6-30-21-calling-on-the-lifeline-w-bill-guggenheim
John_Keel wrote about a strange creature or entity that became known as The_Mothman.
https://en.wikipedia.org/wiki/The_Mothman_Prophecies (1975)
https://en.wikipedia.org/wiki/The_Mothman_Prophecies_(2002_film)
The Mothman Prophecies - Phone Scene
https://www.youtube.com/watch?v=5qrp3P7wWds
This world is part of an ancient universe that might have all sorts of ghosts, entities and creatures.
https://medium.com/inside-the-simulation , https://desertshapes.blogspot.com/search?q=simulation
https://desertshapes.blogspot.com/search?q=ghosts
https://matrix.fandom.com/wiki/Monsters
https://paranormal-intersection.blogspot.com/search?q=monsters
