This document analyzes customer satisfaction with retail banking services at City Bank Limited in Bangladesh. It conducts a case study through a survey of 50 City Bank customers to measure their expectations and satisfaction levels. The survey finds that customers are generally satisfied with reliability but less satisfied with accessibility, fees, and ATM services. To improve satisfaction, the bank should focus on expanding its branch network, simplifying the account opening process, improving ATM availability and reducing transaction fees. The study aims to help City Bank enhance its customer service and better meet customer needs.