Plumber to fix my garbage disposal in trade for musical instrument - $1 (Culver City)

Hi.
I bought a new garbage disposal a few months ago.
It is now jammed.
I have tried turning it with a hex wrench, and it runs for a second and then jams again.
I need a plumber who can fix this thing.
I can trade a trombone, french horn, clarinet, amplifier, or other musical instrument for the work.
Thx.