For assistance with your Citibank debit card, you can reach customer service at 🌐📞☎ 1-805-430-5837 🌐📞☎ (USA). Whether you need to activate your card, report it as lost or stolen, dispute a transaction, or resolve any other debit card-related issues, Citibank's support team is available around the clock to assist you. Their representatives are ready to help 24/7.