I have no doubt that there are scum who do that kind of thing, but I was replying to that guy who said a picture of a front door is no proof. If the date and time match up to when they said they would deliver, and the picture is quite clearly a picture of your front door then I would say that's fairly reasonable evidence to suggest a delivery was attempted.
Plus I'm sure people have things near/next to the door that can distinguish their number 30 from someone else's, or whatever. My front door is fairly distinguishable to me, as I can see through the glass and see the objects on the other side. If someone just posted a random door it'd be obvious that it was a fake.