Contact official after-sales customer service. Marriott can merge accounts after 30 days. If the second account cannot be found, it should be a system failure. You can contact the official after-sales customer service to handle it. CITIC Marriott Credit Card is a credit card product launched in cooperation with Marriott International Hotel Group. Cardholders can earn points through credit card consumption and redeem and use them at Marriott International Hotel Group hotels.