[azstar]

you do understand that United does not have your phone number so they couldnt have called you, right?

Not always true. Most PNR's contain a passenger contact. The only time it wouldn't be in the PNR is if the booking is made directly by another airline and not entered by the carrier. Almost all travel agency PNR's, as well as online travel agency PNR's contain the passengers phone number regardless of the computer system that is used. The problem is that airline's no longer bother to call anyone when there is a cancellation or schedule change. Sometimes they e-mail the information if the PNR contains an e-mail contact, but they don't always do that. Airlines just don't employ enough personnel to contact their passengers when there is an operational irregularity or schedule change.