9/23/2014 update:  Called back to caller I.D. calling number at 770-870-1072.  Lady that answered identified herself as "Gina Penn".  She told me that the calling company is "Convergent Outsourcing, Inc." and that they are a collection agency.  

Total Scam.  They left no voice-mail.  I called back.  First, I talked to Punjab from Durkadurkastan looking for Felicia Johnson (it's a code-word).  I replied politely that it was a wrong number, and moved on with life.  They called again, I decided to [***] with them. I answered in an Ebonics thug voice that I was Felicia Johnson....Daryl Whiteguy was intimidated, and passed me on to his supervisor, Madea.  She was all like 'oh, so you're Felicia Johnson?  Whats your mailing address and Sprint account number?'  I said '[***] I ain't need no Sprint. Who da [***] you?'  They went on to say they're Convergent Resources  (While on the phone, I googled a quick BBB check - D-).  I said 'you know you got a D- with the BBB?  And over 1300 calls complainin about your sorry [***]??'  She was quick to say 'its clear we have a wrong number...your number has been removed from our database'... I said '[***] - dat all you got??'  She went dead silent, then said let me transfer you to my supervisor.  Four rings, then a beep, Bethany Whitebitch leaves a message 'please leave your name and number, etc.'....I calmly said, in my post-graduate voice 'I have been recording the last four and a half minutes of your associates berating me, demanding information from me on a personal cell phone, well after 8pm on a week night.  I have checked your company out.  I will shut you down.'  And left about thirty seconds of dead silence after it.

[***] 'em

They called. Did not leave message. I called the number back. Could not understand the person speaking. Asked her to repeat herself. Still could not understand her. They were American. Have no idea who it is. Some company.

This number calls multiple times I answer no one speaks. Very harassing