I dunno, 5412.
I've been very fortunate all my life, being represented by responsive politicians, excepting the couple of years I lived in Allentown, Pennsylvania.
That was the only bad experience, when I contacted a corrupt machine Democrat state representative, and got rebuffed rather rudely.
But out here in Nebraska, I've never even gotten a brush-off, not even when the peson was a Democrat. On matters non-political--bureaucratic snafus, those sorts of things--I can't recall one senator or congressman whose office didn't take care of it, even if only a trivial matter.
Hell, one time I wrote my congressman (R) bitching about the lack of railway schedules out here, and one of his aides, while going home that evening, in Washington, D.C. at Union Station picked up the timetables for me. (This was before the internet, by the way.)
Because I've done income taxes since I was a teenager, over the years I've encountered customers with difficulties with the IRS (Internal Revenue Service), and the office of one or another senator or congressman helped resolve it.
On matters political, there's of course been disagreements with Democrat senators from Nebraska, and the very rare Democrat congressman, but never a brush-off, never told that my opinion or feelings didn't matter.
The Democrat U.S. Senator Edward ("the Zero") Zorinsky, in office 1977-1986, once wrote and told me that I needed to grow up, but other than that was always cordial and respectful.
At the time I went to the socialist paradises of the workers and peasants with free medical care for all, Nebraska was represented by two Democrat senators, one Democrat congressman, and two Republican congressmen (a situation long ago rectified).
Due to a transposed telephone number, I evaporated, for six days trying to grope my way through a wockenkuckkucksheim, a cloud cuckoo-land where nothing made sense--an experience I certainly would not wish upon anybody else other than the les risibles and drek primitives--and all five representatives of both parties raised Hell with the U.S. Department of State, wanting to know why I wasn't being found, even though I was leaving all sorts of clues, hints, traces of where I was, or where I had been.
They all raised Hell, but Senator J. James Exon (D) raised the most.