Call Blocker 9000

I am using "Call Blocker 9000" on a Bold 9900 with 7.1 Bundle (v7.1.0.267).

I have all permissions set to allow, and I have the block unknown and private caller boxes checked. Why is this phone still letting unknown callers through? Do I need to start searching for a new call blocking application?

Are there any better call blocking applications out there that seem to work better?

Am I using the wrong call blocker? 67 views and no replys, what are the Bold 9900 users utilizing as a call blocker program and are ya'll happy with it?