Tell me about it.
UPS delivered a package to me that had been misaddressed. Guy I bought some stuff from on eBay put a label with my name on it by mistake.
I called UPS six times trying to get someone to take it back, and finally had to ship it to the guy on my own dime. By USPS.
I know that the mistake was his, but you think they would want his business enough to at least return it to him (and charge him again to ship it to the right person).
I hate UPS.
And if you buy something (like a restored vintage tube radio made of Bakelite) and it is destroyed during shipment, you can forget about trying to get a single dime from UPS even if you have insurance. They make it impossible.