Never leaves a message

FRAUD!!!

been calling me for a few weeks now.  never leaves a message, so not important i guess.

calling at all hours on new pre-paid cellphone number (which was recycled/someone else had the number before me). no way (on this phone) to delete/block call. extremely annoying.

DFS= Doo-Doo, Feces and Scat

calling at all hours. Dell Financial Services. caller id DFS.

This number has called my phone often.  No message left and I have no idea who Pentagroup is so I'm lost on who this could be

pentagroup.us

Call from Chad Thomas of PentaGroup LLC saying that Nextel Sprint had an open collection on my report for $386.  He gave me 866-384-1639 as a number to follow up with him, which identifies him and the PentaGroup, but the number was busy (obviously on the phone making more calls).
The number for Sprint he gave me (866-235-1195) is not in service.
He said the Sprint account was for an address in Massachusetts.
Searching on PentaGroup, I saw a 2006 posting regarding $386 Sprint collection, so I'm thinking this is some kind of scam, but haven't discovered the angle yet.  He verified my name, home phone, cell phone and last 4 digits of my SSN, but did not ask for additional info.
My Experian/Equifax reports are clean, though I couldn't get into TU.

7/06 advised to contac a williams james and to call back a 1-800#. Called early in the am. Will not be contacting.

Have received two calls in the last two days saying I owe a debt & I must return the call. I don't owe anyone & when I return the calls I get a busy signal. I'm blocking that number

still don't get the message wrong person. The call was at 12:34 pm

called 3 times left a voice mail of some crackling sound all 3 time exact same message no actual words though what the hell.

called at 11;14 am no message let my fax get it