All the links go to the url:
http://refer.ccbill.com/cgi-bin/clic...=1375242&BAN=1
Which I think has your ref-ID in them.
That's how CCBill works, if you use refer.ccbill.com links, they set a cookie and whatnot, BUT your hits will be tracked even though your link isn't visible after they reach the site..
Easiest way:
Go to the CCBill joinpage following your links.
View source--> find "ccbill_referer" and see if it's your refcode.