Oh the beauty of diversity.  How different we are in every way, including our ability to communicate.  If you haven’t learned by now then you either don’t realize that people misunderstand what you’ve tried to say or you don’t care if you are misunderstood.   But, if we value relationship with the ones we are trying to communicate with then we will take the time to learn.  To assume you are heard simply because you think you are a clear and precise communicator is a self-delusion and maybe in some cases arrogant.  Either way it does not take into account the beautiful diversity of our hearers.  Communication is an ongoing process that may need to be revisited over and over til what we find is not that we have simply been heard and understood but rather we progressively and more intimately know our hearers as well as we are known.  To truly desire to be heard is to truly desire relationship with our hearer and that is a heart issue not just something wrong with the ears.