Do you open the door unless someone has called first or messaged or scheduled?

[Lonelyus]

I dont, Well someone has knocked on my apartment door then left, Then today the person knocked went downstairs then knocked again, Im not opening because no message or call.

People have to let me know their coming so i know whos at the door.

What if i open and its someone dangerous.

 

[ManOfVengeance]

No I don't.

 

[turbocuckcel_7000]

NO​