Found out who this number is.  Hunter Warfield is a collection company out of Tampa FL.  They call numerous times every day and all you ever get is an automated number.

It's a debt collection agency.  I received the same phone call and was successfully connected.  They're based out of Tampa, and I believe "Denmen" was a part of the name.

Got call on cell phone and when picked up there was an automated msg from which I couldn't figure out the name but it mentioned that i have a msg and press 9 in order to retrieve it. After pressing 9, it went into waiting mode as if it was connecting to some actual phone no (may be an agent). This is first time, I received a call from this #.