Anyone know a company that does Voice-Mail Marketing

I'm looking for a company that provides solutions to do voice-mail marketing. It means that a recorded message calls a potential client and leaves a message on their answering machine. If the person happened to pick up the system would hang up.

An example of an overseas company doing this is:
http://5star-email-marketing.com/voice-broadcasting.html

Any information will be appreciated, please email: grpbs@yahoo.com