Came up as coming from Denver, IA. I didn't pick up. Left an inaudible, 2 second, robo-voicemail. If I can't understand the voicemail, I don't call back. I have a personal rule that if someone wants or needs to speak to me, they need to leave a personal voicemail I can understand clearly.
By the way... I love 800 notes. One of the best sites on the web.
If you gave them any financial account numbers you'd best change them out, quicktime. DO IT NOW! Please be on guard, you are now known as an easy mark and you are apt to get more of these calls. Be on the look out for various scams. Do some research. Never give personal information to anyone over the phone or internet that you do not personally know.