ICICI Bank is India's largest private sector bank that offers a wide range of banking products and services. It uses customer relationship management (CRM) strategies to better understand customers and build long-term relationships. ICICI Bank collects customer data through application forms and centralized software to customize offerings and cross-sell products. It faces challenges like poor customer service, high fees, and aggressive debt collection practices. Suggestions to improve customer service include reducing fees, establishing gentler debt recovery procedures, and addressing complaints about ATM availability and transactions.