Oh UPS? Last month I have ordered a package from MakerBeam, was supposed to be here in 3 days from Netherlands.
It took over a week and two phone calls after the tracking system indicated some "problem". At first to be told that "the package has arrived late and will be delivered tomorrow" (complete BS, the tracking was showing the package has actually left for delivery and was returned to the depot) and the day later when nobody has turned up I got a claim that the sender "has put an incorrect address in" - despite the address being correct both on the invoice and the UPS tracking system.
"But what you see online is not the same we have in the system!"

For some reason they have tried to deliver it to a totally different address that had nothing in common with mine and that was not on the package neither. Fortunately nobody was present because I would have likely had the same issue as the OP.
Finally a courier (a subcontractor, not an UPS employee) turned up a week later and when I have asked what the heck, he told me with a straight face: "Oh, that was a colleague, he is new and doesn't know the city yet so he has delivered it to the wrong place."
And don't get me started on how useless their website is - I have even signed up for "My Choice" that supposedly allows you to see whether there is a package coming for you and schedule its delivery. Well, what you know - the system had never any clue about the package above and when I have entered the tracking number - "Change of delivery is not available for this package."
UPS is a complete (and expensive) joke.