I thought it was Frontier's 800 line being overwhelmed, but just now I called out to another number (a local one) using my Vonage "landline" phone and received the same message with the same voice! This was a Vonage redirect, not a Frontier Airlines one. Aaaagh! I tried calling Frontier Airlines on my cellphone and I got right through!
Thank you, Vonage, for making it clear that the message originated from you. NOT!
Since I mention the Denver blizzard, I should note that while Denver RTD has suspended bus service because many highways and roads are blocked by abandoned vehicles, RTD Light Rail Service is operational. Unfortunately, not all stations are accessible because of monster drifts.
I'm not a big fan of light rail -- I think Bus Rapid Transit is a better use of transit funds, in general -- but this a good illustration of one of the benefits of commuter and light rail. It doesn't matter how clogged the freeways are, the trains can keep running at full speed.