Unfortunately, this type of call is exempt from honoring the "do not call" list.
"Because of limitations in the jurisdiction of the FTC and FCC, calls from or on behalf of political organizations, charities, and telephone surveyors would still be permitted, as would calls from companies with which you have an existing business relationship, or those to whom you’ve provided express agreement in writing to receive their calls. However, if you ask a company with which you have an existing business relationship to place your number on its own do-not-call list, it must honor your request. You should keep a record of the date you make the request."
I also had a call from this number on my cell yesterday- I was on the line so I didn't answer at the time- they left no message. I just called back the number and it does not identify what it is. The greeting says you can leave a message, but I tired and the mailbox was full. My attempts to transfer to another extension were met with similar "full mailbox" messages