Repeatedly calls and leaves no message. When I called the number back it says mailbox full. I finally was able to get the call and they start with the sale pitch how the cost of electricity has gone up and they will do a free audit of my home.

They called two minutes before 9 PM and left no message.  I called back and the mailbox was full.

This number has called several times but always hangs up without leaving a message. Probably a telemarketer.

Called and also left no message.  Probably telemarketer.  Do Not Call list is useless.  No one pays attention to it anymore.

Got two calls from this number.  They left no message.  Call back says "voice mailbox not set up."  Another site has one report of this number that says, "left no message."  Just wondering if anyone else got this call.