I know, and its clearly not making a difference, no? So call in and make him address it live on radio. Pretty easy to avoid your posts, much harder to avoid the topic when he's asked directly. How about this. If you call in and he somehow dodges the question or gives an unsatisfactory answer, I'll call in and ask it again. If he dodges it still, maybe someone else will call in and ask it again. Howzaboot that?
If posting your concerns gets you nowhere, pick another avenue. The radio show is pretty much the perfect next avenue to go down.