They just called me. While it was ringing I googled the number and find out it's a scam. I've read elsewhere it's a robocall about some drug company thing, or lawyers representing a drug company. Scam scam scam. They didn't leave a message.
Called my cell and didn't leave a message. My cell is registered on the FTC Do Not Call list, obviously they are not compliant. If the FTC gets enough complaints they may investigate and start legal action.