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UPS already acknowledged being behind in delivery orders for Christmas, but that hasn’t stopped people from shaming the company all day. The UPS Facebook page is inundated with scornful posts, including one particularly angry message: “Beyond angry. We have not left the house all day & have been nervously pacing. This was supposed to be my son's big gift. Never showed up, thanks for nothing." Another customer vented to NBC: “UPS ruined my Christmas,” Katherine McEachen told NBC. The last time UPS failed to deliver a large number of packages was in 2004 due to an ice storm. UPS recognized its failure today, releasing a statement saying “UPS understands the importance of your holiday shipments... the volume of air packages in our system exceeded the capacity of our network immediately preceding Christmas so some shipments were delayed.”