How to get a human on the line.
Visa (800-847-2911) : 000 (ignore prompts saying that it's an invalid entry)
Safeway local store : As soon as voice prompt starts type 1200 to get human
FedEx (888-GO-FEDEX) : At message say Representative
Verizon DSL (800 567 6789): Say I don't know it then technician
..and many others.