My advice is to not make any passive-aggressive statements, even if you feel that way.

The main reason that most applications are denied on the first try is that they are trying to weed out people who are malingering and manipulating, as those people wind up draining the system and taking away resources from people who really need it.

A passive-aggressive statement will likely come across as a manipulative attempt to intimidate them, and could push them in the direction of thinking you are trying to abuse the system.

Try to just be patient, determined, follow procedure and strongly consider the option of getting a lawyer.