Caller ID said Central Concrete, didn't leave a message.  I Contacted Central Concrete, and confirmed that this is not one of their numbers.  Someone's idea of a practical joke.

Called but didn't leave a message

says "cntrl concrete" on the caller ID.  Did not leave a message about concrete.

It was someone calling about a clean energy initiative

I have received two calls in as many days from the above number. They have not left a message. I have never done business with this company and have now placed them on my blocked calls list!