I waited all afternoon for an urgent delivery by UPS. Receipt was crucial on time and I made a special point of staying near the front door all afternoon until 6 pm.
Never happened. Later that evening when I went online to track it stated that there was no one at home to sign and the package required a signature. "Attempted delivery failed at 4.40 pm". No delivery notice was left so it is quite obvious that the driver made no attempt to deliver.
Maybe he was simply too tired to bother and decided I could wait another day? In future no UPS for me if I have the choice.