COMMERCE CITY, Colo. -- After initially telling customers it might refund their money, UPS said Tuesday there would be no refunds for those who purchased "guaranteed delivery" by Christmas.

UPS said there will be no refunds because the delays were caused by last week's snow storm.

"We cannot control the weather," said UPS spokeswoman Natalie Godwin.

As 7NEWS first told you last week, nearly 50,000 packages were not delivered by Christmas because UPS trucks were halted during last week's snow storm that dropped a foot of snow in some areas of metro Denver.

The debacle resulted in hundreds of people lining up outside the Commerce City UPS Customer Center on Christmas Eve. Most who showed up at the customer center were turned away without their packages.

UPS said all the packages that weren't delivered on-time would be delivered by Tuesday or Wednesday of this week.

Frustrated customers vowed to get their money back, saying UPS had no excuse for the massive delays. UPS's main competitors, FedEx and the U.S. Postal Service, did not experience the same delays and reported few problems with delivering packages during the storm.