Top 15 Most Mysterious Phone Calls Ever Made sources
http://www.cracked.com/article_21794_hello-jfks-about-to-die-6-creepiest-anonymous-calls.html
http://www.ranker.com/list/creepy-unexplainable-phone-calls/aaron-edwards
https://www.reddit.com/r/AskReddit/comments/4fbw8d/whats_the_weirdest_or_creepiest_phone_call_youve/
http://unsolvedmysteries.wikia.com/wiki/The_Crew_of_the_Casie_Nicole
https://www.reddit.com/r/UnresolvedMysteries/comments/3ywojf/mysteriesdisappearances_with_strange_phone_calls/
http://mysteriousuniverse.org/2017/06/mysterious-vanishings-with-bizarre-phone-calls/
http://www.planetdolan.com/10-creepiest-phone-calls-ever/
https://www.thoughtco.com/freaky-phone-calls-2596706
https://www.reddit.com/r/AskReddit/comments/2hqjp8/stories_creepypasta_are_great_but_does_anyone/