I'd go so far as.. given its brevity and its Al Punte at root: you just might hear from The Gov. :-)

But.. as my Mater oft said, "You can't get blood out of a turnip".
And I have experience of when THEY make Mistreaks--overpaying for Example--at least in CA (though Soc-Sec is obv. Fed.) ... you can pay-back-as-Possible, and apparently with so trivial an amount as ... to be a very. long. time.

Do look into how That works: their initial dunning-threats omit that aspect--but IME, on phone--you CAN work out a deal; mainly they Do [tacitly] recognize that THEY screwed-up and if you used the windfall already, surely a common result: they don't even try the, "put 'em in the stocks outside the Courthouse" shtik.
However, this IS the Menace-dominated End-times :-/ so YMMV