Many of the Couriers around here are a bit lazy. We've had cards left because "there was no one home" when there's been someone home all day, no knock on the door, nothing. Even when they do knock they barely give you time to get to the door before they're on their way back out the gate.
From my desk at home I can see our driveway - saw a courier van pull up, driver gets out, puts a card in the letter box and drives off. I go and get the card "noone home" marked on it. I called the courier co and went "wtf", they said too bad, pick up from depot.