Toby somehow found your number and now calling you is his favourite form of hobby. Since Tim is always annoyed with him and Brian is busy, he has no one else to talk, which lead him to yapping about everything that happened to him through the day to you, his only listener. Calls you after midnight, so no one will listen to his call, because he wants to keep you as his treasure. Knows fair amount of information about you from his stalking, likes to tell you random facts about you and scare you