Here, if you want to call these guys back and harrass them.
The callback number is 800-216-1710
Ext 402 will get you Nate Johnson.
Feel free to call and inform Mr. Johnson you are from the Offices of Dewey, J'Tem, and Howe, and one of the senior partners (Joseph Dewey, Shitra J'Tem, or Miguel Howe) has found he has outstanding debts to some 187 different companies who would all like to collect. Ask if he would like to make a payment now with credit card, digital transfer, or some other form of payment.
Of course if you're in the Rolling Meadows area of Illinois then you could just go to
1701 Golf Road Tower 2 Suite 100
Rolling Meadows, Illinois 60008
and visit them in thier home offices, perhaps with invoices demanding they pay for stuff or better yet picket signs to protest thier horrid behavior and harrassment.