How to contact Citi® Secured Mastercard®? Here are the different ways to get in touch with Citi® Secured Mastercard® customer service: Phone, chat, email, contact form, Facebook, Twitter and more.
Contact Citi® Secured Mastercard® on its official Twitter account: click here.
The official facebook page of Citi® Secured Mastercard®: Visit.
– No customer service by email.
Check the various customer service options on the Citi® Secured Mastercard® site: Click here.
Citi® Secured Mastercard® customer service or head office postal address: Citibank Customer Service, P.O. Box 6500, Sioux Falls, SD 57130.
Citi® Secured Mastercard® customer support call center number: 1-800-950-5114.
Customer care hours of operation: 24/7.
Servicio al cliente español: 1-800-947-9100
TTY: 1-800-325-2865