(An iPod isn't even a phone, is it?) I would escalate, firmly and without bending over backwards to be chummy. Make sure to leave a paper/email trail and use phrases like "violating his IEP" at every turn. Stress that after the teacher violated his IEP, you attempted to provide an alternative solution but they shot you down with the falsehood about the iPod being disallowed as a "phone", perhaps pointing to other examples of A/V aids being used as accommodations if you have them. I'd also put in writing all statements you've heard doubting his LD, and throw in "evidence-based practice" somewhere.
