UPS is about the worst delivery service out there.
I frequently have packages delivered to the office because the door is always open and someone is always here during business hours, but I can't tell you the number of times items have been shown to be delivered by leaving them on the "porch" when they were not left on the porch. Happened today with a bike gear order, which just happened to make it more irritating.
Even the US Mail has been providing better service, and that is saying a lot.