| 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 |