The cost of poor communication might be incredibly high. At a professional level, the company may suffer far-reaching consequences because of unfinished or failed projects and assignments. As for workers, they might feel isolated and disconnected. Such feelings further lead to unproductivity, which results in failed tasks. On a personal level, the lack of open and two-way communication may ultimately result in a breakup. In other words, you may lose your partner because of bad communication and misunderstanding.