Last week had a shipper, flag me down before 1030. He was upset that his next day hadn't arrived. I said, my DIAD wasn't showing a delivery for him. He got very angry and loud about UPS going downhill as a company and that FEDEX was about to take our packages. The rest of the commercial suites heard all this commotion. I let it go and went my way. The following day, a red arrived for him. I checked the package for a service cross or a pal, thinking somehow we messed up, but there were none. The owner, informed me that the shipper, mistakenly shipped it to a different location. I stared him down as he was signing for his package. You should have seen his face.The other adjoining suites, later asked what happened and I tell them what transpired and now they know he's a chicken bleep, unprofessional crappola of a guy.