Policies are decided in the interest of plutocrats. Very occasionally when it would generate good PR or if disenfranchisement gets too bad, some retroactive number fudging will be used to whip up a press release or report on the number of calls or letters to a congressional office, as if to make it seem like a policy was affected by democratic consideration of constituents, but that is purely theatrics and publicity and has no bearing on or connection to the way congressional offices pursue legislation.
There are of course other tools, but they require a bit more dedication: regular donations to think tanks and lobbyists who agree with you and can spend time schmoozing/convincing congressmen, regular donations to legal foundations who challenge overreach in court, and of course voting when the time comes.
cyn·i·cal
/ˈsinək(ə)l/
1. believing that people are motivated by self-interest; distrustful of human sincerity or integrity.
"her cynical attitude"
2.concerned only with one's own interests and typically disregarding accepted or appropriate standards in order to achieve them.
"a cynical manipulation of public opinion"
The tone I imagine when I say something like “legislators only consider the desires of plutocrats” is like saying “plants survive by photosynthesis” or “the Efficient Markets hypothesis is only useful as an occasional approximation” or something - neutral observations of factual descriptions of how systems work.
“Cynical” implies a normative judgment, or some extended assumption as if my comment has anything to do with presumed self-interest or distrust of sincerity.
While I'm playing the reference material card:
Cynical
Antonyms of CYNICAL
positivist, cheerful, trusting, optimistic, positivistic, sentimental, impractical, undoubting, idealistic, naive, believing, hopeful, positive, trustful, rose-colored, romantic.
The worldview you describe isn't any of those.