Yes, they knew my first name and his name was Mike and left no message.

yeah very rude too

Yes, called our phone and left message, asking for my husbands ex wife by first name only, how he got this # for her name is unknown. Looked up # but is unpublished from Salem. Guy left his name as mike?

The guy is Mike Simpson, or so he says.  Left a message saying Brenda must have forgot her appointment.  There was urgency in his voice.  Ordinarily a good citizen would call and say he called a wrong number, but when the number is "unavailale" I'm not returning the call.  It's no accident.  If you return the call, you are telling a telemarketer that your number is valid, and it's a green light for a rash of phone calls to begin, day and night.  Don't be tempted to return the call.

other site suggests mike is a collection guy - cascade collections