Seems they aren't even a member of the CCTS:
So that means one of two things:
1) No one has ever filed a complaint with the CCTS against Ebox (rules state an ISP must join within 5 days of a complaint being received)
2) They are registered with the CCTS, but under another name.
Which is it? I'm going to assume it's #1. But you know what they say about assuming...