This is a collection agency. Don't know who all they deal with, but I do know they work with Student Loans. If you owe on your student loan and are in default, they will call to try to get you to settle to an amount that is SUPPOSEDLY better than what will happen if they start to garnish your wages.
I'm looking into it right now for my wife, because unfortunately, I think they are telling the truth in regards to paying them the lower amount vs. being garnished...
[***] have been calling my job and friend up to 5x a day!! thank god i am the one answering the phones, so i just hang up on them!! so friggin annoying and it is complete harassment!