I know, that's the bit that irks me (not telling me why you fail.. not that I think that'll happen) . Umm they're checking my relatives (even the ones I've never had contact with), my ex, and a lot more.
I did try to keep calling them but it doesn't work. The only answer I got is 'we can't give you an answer because the process involves feeding the information into a computer and waiting for the computer to spit the results back out. We have no idea when the computer will decide to do that, so cannot give you an estimate on when the checks will be complete'.