I just got two emails from Cashnet, one to advise me that they will not work with a 3rd party for payment arrangements, and they do not work with consolidation programs. The second email was basically a forwarded message from someone else who works for this company trying to set up a 3-pay arrangement. They will not accept mailed payments, no checks or money orders.
I was then told to email my card details (i.e., number, expiry date, validation code) and the money would be debited on certain dates. The kicker was that they charge a $5 processing fee for each payment.