Those citizens who are unsatisfied with how they are being represented should vote for people who represent their interests better or run for office themselves.
Our government is, as Lincoln stated, "of the people, by the people and for the people".
Should. But they do not.
They vote for the guy they think can win during the primaries then vote for the lesser of two evils in the general election.
That's a problem of the people, not a problem of the system. The government doesn't force people to vote that way, the people choose to vote that way themselves.