Left a message for someone (not me) asking her to call back. ID said Discover Financial. When I called Discover they had no clue. The callback number they left was 1-800-347-7599, an actual Discover number, so what was the point of that?
Ask for identifying information. I called Discover direct because I do not even have a discover card. DO NOT GIVE TIHEM ANY INFORMATION they are trying to steal your identity. Hang up and if you do have a discover card call discover yourself (not the number they called from the actual discover number on the back of your card).