Hi J.,
I can understand your frustration. That's kids in general these days.
My 21 year old son whenever we yell for him (his room is upstairs) he claims to never "hear" us.
I almost died laughing yesterday...He was charging his phone in the kitchen (downstairs) and heard his phone beep (he got a text message) from upstairs. He came running down the steps and grabbed his phone. I looked at him and said, "are you kidding me?!@!!" You can hear that all the way upstairs but you can't hear us when we call you to pick up your stuff!?
Our kids will do things if we ask them and then we leave. For some reason they don't want us watching them, I think then they know that we know they are actually doing something. Who knows. I think you just have to keep things light. Our son was a slow learner. I didn't let him think that. I let him know that he just has to concentrate harder.
Never let them know that something is wrong. Because what the mind can conceive it can achieve. Read him a couple of chapters from "Chicken Soup" for the Soul. Find someone that overcame the ear thing. Find some of his strengths and focus on those. He will soon forget about the hearing thing. I read those alot books. My family has had to overcome some pretty amazing things in the past 25 years. More than most kids had to endure.
Focus on positive. Things will turn around.
J.