Citibank Сustomer Service Financing & BankingMain Channels of Communication Phone | Mail | Social Media Citibank Phone: 1-800-374-9700 (Online Banking) 1-800-627-3999 (Bank Account Information) 1-800-374-9700 (option #2) (Bill Payments) 1-888-214-0036 (Citi Mobile) 1-800-745-1534, (option 1) (Checking, Savings...
