This happened yesterday at my job. We got a shipment of iPhone 6s' and 2 of them were not ours but belonged to a company across town. We asked the FedEx guy to come back and pick them up or we were dropping them off at the hub. He came back later that day.
I have no idea why UPS won't accept it.
It's not worth stressing over it or ruining your weekend over, it's not your problem to be honest. It's on UPS and Apple. You did your part.
Thanks I know totally ridiculous. It was after 9:00 when he delivered them. I felt sorry for the guy. He was 50ish and looked like he was ready to pass out so I gave him cold bottled water. He had been gone less than 5 min. I even got in my car to find him but gone in a flash.
I called immediately. Stupid UPS kept me on hold over 30 min to only tell me they messaged the hub. Wait till they come on mon. I said well I do work. I don't think it phased her. Lol.