Oh man, that is strange.
I've actually had a lot of trouble with UPS deliveries lately:
About a week after an item arrived, I received an email saying "We regret to inform you that UPS was unable to find record of the item being delivered" or something like that.
For a different order, UPS apparently re-routed delivery to a different apartment unit (even though I'd specified the correct unit on my order) and I never received the item. I'm still working with the seller to try to get a refund since the UPS tracking info states that the item was delivered, when it wasn't actually delivered to ME.
I never know whether a UPS delivery is going to be placed in front of my apartment, or delivered to the rental office, and UPS never leaves a note when it's delivered to the office instead.
Very fed up with them lately!