Happens to me all the time. For some reason most of my issues are with UPS. When I am at home, I dn't work so I have nothing to do but sit at home and makes sure my stuff gets delivered. I have UPS in my phone now so I can complain when they show 'attempted delivery, not home' and the driver never even came down my block...............
I had to call them twice. First dude couldn't be bothered with doing his job. Second time I thought I was connected to Mambai. That guy had a thick accented but handled shit much better.