The people that call from that number don't have the ability to block a number in the system. You need to call 888-717-3519 and then ext 0 and talk to a real person who can remove you.
I was so sick of the calls I started harassing them by repeatedly calling back, they finally told me how to get out of the system. The lady was nice, spoke normal english, and said I would be removed within 24 hrs. I hope so.