Ghost calls are very common in horror movies but it become frightened moment when such occurrence is common regularly on-going basis. Newsobserver has interesting article about this where they mentioned about Ray Bradbury who wrote a teleplay which is interesting read about telephone switch that reached sentience only to start stalking a person. Most of such dialers are telemarketer those use artificial intelligence to detect people answering and leave blank call however especially in cell phone they leave a miss call so that people will call back on that miss call number.

Once you call on that miss call number you will find someone start promoting either new low mortgage rate, finance loan or promoting a political candidate or something like once in a lifetime opportunity. Really crazy people!