Some dont want to hear the truth because they dont want their illusions destroyed, or if they hear it, they hear to treply, not to understand.
Sadly, this is the case in almost all political and religious arguments, either they dont want to hear something bad about their religions ( most of the time it is a misunderstood fact) or they hear to reply with a ready tailored response.
Dont just hear, go and listen, hearing is the physicsl aspect of the operation, listening is paying attention to what you hear, understand what is being said...develop a skill whereby you put yourself in their shoes and understand where are they coming from and why are they saying that.
Always observe and listen with your inner senses.