Thank the host for allowing you to come on the show. Offer to come back. Monitor the station after you leave and as often as you can to see whether your appearance made a difference. Don't give up. It most likely will take several visits and lots of patience to change a negative attitude that has been years in the making and is supported by rabid callers and high ratings.
Every situation is different.
Every host is different. The one constant is that we cannot afford to sit back and let people take pot shots at us. You can only extinguish his fire with information and the truth, with patience and persistence. Salter is the communications manager for the Alabama State Department of Education.