2. LITERATURE REVIEW
Researchers believe that the service quality theory is based on the literature of customer satisfaction and product quality (Brady & Cronin, 2001). There are many service quality models but scientists are not of one mind about these models and measurements. Service quality has different dimensions regarding the various service sectors (Pollack, 2009) Nevertheless, service quality measurement enables managers to recognize quality problems and enhance the efficiency and quality of services to exceed expectations and reach customer satisfaction.