FOOL ME ONCE, SHAME ON YOU; FOOL ME TWICE, SHAME ON ME.
Anyone who falls for the same deceit twice must accept responsibility for his own gullibility; thus, one should be more watchful the next time around. You must learn from this, so it does not happen again.
How many have been fooled over and over? Tricked, duped, conned, or just plain old hoodwinked? Of course, we don’t want to admit it — “I didn’t know it was happening!” Getting scammed and not even the slightest hint that it is happening? Yes, what a fool we can be.