IMHO you're doing way too much calling. Birds that respond like that do not come in well a lot of the time and want you, the hen, to come to them. That's the way nature intended and he's probably smart enough at his age and has been shot at and missed like you did or even wounded. It sounds to me like you need to set up right on the edge of the heavy stuff he likes and call very sparingly, have plenty of patience and I'd bet sooner or later he'll sneak in to you and if you're ready you'll get him. You'll probably also want to change your calls and calling pattern, as he's now smart enough to know what's what when you call if you have busted him like you mentioned. IMHO lack of patience is the biggest thing that most turkey hunters lack and I include myself in that category!