NCO Financial. They call from a range of phone numbers and it's impossible to block all of them.

NCO student loan collection.
Apparently these "classy" well-trained, guard dogs, will bark up the wrong tree.
My uncle has a student loan from 20 years ago.  Im the lucky chap that has the same name as my dead beat uncle.  So "John davis" the collector thinks i'm lieing... He thinks im just denying that Im my uncle.  WE HAVE THE SAME FREAKEN NAME!!! Anyways... These guys will call and call until a person might need therapy.  I CANT SLEEP WITH OUT THEM CALLING.  So i decided to help my uncle take care of this matter for good.  Of course my recommendation and any professional will tell you "Its always best to make payments!" but its always best to know your options before negotiating with these "Classy" Collectors.  Heres a website I found that some "Student Loan collector" Made... He spills the beans....
http://www.studentloanfundamentals.com/blog/

Hes a collector so i still hate him, but personally I think this is the first time some one actually came out the laid out the rules on the table.  Its a mystery as to why this type of thing isn't more accessible.

NCO wish the place would burn down then those rude A holes will know what it's like to be without a job and not making anough money.

NCO Financial Systems, Inc.
400 Lakeside Drive Horsham PA 19044
800-220-2274