My phone (Note8) started blocking contacts so they can´t get through. I checked and these contacts are not block in settings. I have even tried to block the and unblock but it doe not work. I contacted my phone company and they don´t understand this because these numbers are not blocked in the system. I receive a missed call when these contacts try to call, also there is some app called phone blocker that pops up the notification bar but I can´t find it on my phone. I have not installed any phone blocking apps on my phone so I don´t understand this.