I too receive the recorded messages almost daily, and the "press 9 to opt out" certainly has no effect. I've tried several times to allow myself to be put through to an operator and asked to be removed from their database and they just hang up. What wonderful jobs those people must have! The telephone number is always concealed. If, as the "real" PPI Helpline are claiming, this is other unregistered operators impersonating them, it begs the question of how we can make a complaint with no company or telephone number to complain about!