I am looking for the right translation to say: But it is the only way to make them aware of the incapabilities of the civil servants, whom do not do their job right.
I was thinking about: Pero es la única manera de crear conciencia de la falta de capacidad de los funcionarios, que no hacen su trabajo correctament.
Instead of crear conciencia, could I better use dar prueba de/mostrar?
Thanks very much in advance