Who called from 3237035195

They left a message about some kind of energy bill reduction....probably a solar company selling solar systems.

called at 9:25am on Monday May 19, 2014.  Just a hang up and left no message.

Repeatedly get calls from this number, despite being on the 'do-not-call' list.

Did not answer.  No message left.
Have received 2 calls in the last hour from this number.
CID:  Unknown Name

I have received calls from this number for the last several days. They called four times today already and it's only 10.30am.
I have never answered and when I try calling back, it says the number has either been disconnected or is no longer in service. I just blocked this number from my phone now.