Called at 2 am. Ruined my whole night sleep.
The didn't leave a message. I don't answer unknown numbers in the middle of the night. But I called the number back at 5am, thought I pay back the favor. Their recorder said "this is Scott, from Follow YourDreams". Right away I got a text saying "I will get back to you". I will wait for the call to give him a piece of my mind.
This number called me but I never answer numbers I do not know. I blocked any future calls. By the way, any weird area code numbers and/or prefix numbers such as 999 are numbers designed for scammer programs.