Myeong-dong = I am lost

Banks were insanely crowded. And the few banks I tried were not buying KRW (they would buy dollars, but not KRW).
Didn't see any "currency exchange kiosks"
Gave up.
Can try again -- anyone know a specific place (better than airport) ?

Thanks.

PS -- Chase doesn't want KRW -- they said don't even try to bring it home.