Don't get sucked into defeatism. The system is designed to be able to ignore the average person, sure, but here's the thing: you're not the average person.

Be smart, be motivated, and figure out how things actually work. Then apply the maximum amount of force to the place it can do the most good.

I'm not sure that place is actually phone calls, but there's a reason phone calls are suggested so often. They do work. You might be able to find something better though and if you do let us know.

Edit: Well that was dumb. I replied from memory without reading the thread again. I totally agree about email.

If you hit them where they live (personal Emil addresses and public facing forums) at least they will have to respond. These people are elected to represent the public if they aren't responding during their normal work day, we have a right to pester them until they respond.