Your message, while short, reads as very vengeful toward that classroom teacher.

They won't hear what you're saying if you do that.

(Please see my suggestions above-- the answer is to have directives in place BEFORE a child steps foot into a classroom, and to have those things in writing so that a teacher doesn't have the authority to do the things that yours did.)

Send it to the 504 coordinator and the district.

Schrödinger's cat walks into a bar. And doesn't.