This research aims to adopt the relationship of the customer in the service organizations. However, in order to reach this goal, some private banks were selected from Duhok, Kurdistan Region, to be the samples of this research. The researchers rely on the use of statistical approach to access the data, then processing it by using (SPSS V.24). The research reached a set of conclusions and recommendations, such as the relationship with the customer is considered the key to maintain it in the banks under study. In addition, the results showed that these banks pay attention to the relationship with the customer but by a fairly weak ratio. Therefore, the research suggests that in order to maintain these banks active and competitive, they should work on increasing the ability of administrative leaders to cope with psychological and social pressures at work by indulging them in specialized courses to increase their knowledge and skill levels in managing the relations with customers, and to promote the spirit of initiative in providing assistance and support to customers.