Picked up phone and there was silence on the other end.

Home security scam. Message left read, in a human voice, but was obviously a recording, "I'm sorry I didn't hear you clearly. This is Todd with GE Home Security. Can you hear me okay."

Number has been blacklisted and will automatically hear the out of service message one gets when they actually dial an out of service number and will not be allowed to leave a message.

Called but left no voice mail. Called back: "Thanks for calling, the survey you have called for has ended."

Call, no message - on a cell number that I don't give out.

Didn't pick up. No voice message left.