HARTFORD, Conn. (AP) — Connecticut U.S. Sen. Richard Blumenthal is calling on UPS Inc. to refund customers whose packages didn't arrive on time for Christmas.

The Democrat said Thursday he was disappointed after learning consumers in Connecticut and across the country were quoted arrival dates before the holiday "but instead were left empty-handed."

UPS spokeswoman Natalie Black said air and international customers who didn't receive their packages on time are entitled to a refund under its service agreements. Such guarantees, however, were suspended for ground packages shipped after Dec. 10.

Black said a small percentage of packages were delayed due to numerous factors, including an air network that exceeded its capacity, poor weather and a shortened Christmas shopping season.

One of UPS's biggest customers, Amazon.com, said it was refunding shipping charges and giving affected customers a $20 credit toward future purchases.

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