You want some cheese with that whine? I'm sure those guys get hundreds of callers per show. I'm also sure that you are not the only one that has been "ignored". I've called into a couple of radio shows. I've gotten on air, and I've been ignored. It's really no big deal. I thought that Schopp explaining his side was very professional of him, and actually was a nice thing to do. After all, he could have just deleted your email. Furthermore, it's their radio show. If they don't want to talk to you then they don't have to.
Get over yourself and move on.