LOL! Perfect! Turn their rules around against them. :)
RULE 4: “Make the enemy live up to its own book of rules.”
If the rule is that every letter gets a reply, send 30,000 letters. You can kill them with this because no one can possibly obey all of their own rules. (This is a serious rule. The besieged entity’s very credibility and reputation is at stake, because if activists catch it lying or not living up to its commitments, they can continue to chip away at the damage.)