My old mentor, who was hunting turkeys way before I was born (1969) said, "you can't talk a turkey in to coming to you, but you can talk him in to leaving". Not suggesting that we don't call them to us, but that the bird either wants to come to you or he doesn't right off the bat. If he does, it will be on his terms and in his time. If he doesn't, good luck to you if you think you can change his mind.