Have you considered switching over to NATS?
We have over 70 different integrated processors within our system:
http://wiki.toomuchmedia.com/index.php/NATS_Biller_List
You can use any of these billing companies within your cascade set-up and see which ones work best for your site.
Also, you can take advantage of all the features and functionality NATS has to offer such as extensive reporting, multi-tiered payouts, default adtools, and much more!
You can see a demo of NATS by going to
http://democash.com
If you have any questions or would like me to guide you through the demo please let me know.
Thanks!
vlad[at]toomuchmedia.com
ICQ:452583619
AIM:TMMVLAD
SKYPE: TMMVLAD
TEL: 732-385-1536 x 1123