Customer Service Support
Service Information
Citi Customer Service 1-800-200-7056
(collect 757-852-9076)
24 hours a day, 7 days a week
Citi's DoD Travel
Card Webpage
www.transactionservices.citigroup.com
Client Services for APCs 1-866-670-6462
(collect 757-853-2467)
Monday-Saturday 7:00 am-9:00 pm EST
All Other GTCC
Transition Questions
Travel Assistance Center
1-888-Help1Go
DSN: 312-564-3639
24 hours a day, 7 days a week