I ordered about 15 DVDs from Amazon.com for my nieces and nephew in Colorado. They were shipped in about six or seven different packages. Today I started receiving notices from Amazon.com saying my account would be credited b/c the boxes had been returned from UPS as undeliverable. There were several reasons given: unexpected delay in delivery due to external factors reason unknown signature needed and no one was home shipment refused Sorry, I can't remember all of the exact wording. Has anyone had this happen? What does it mean? My family did not refuse the shipment!!!! Neither UPS or Amazon.com has answered my e-mails and I'm really curious.