| CSC: | 1-800-381-3444 |
| Civilian Customers | Option 2 (Provisioning, Maintenance/Troubles, and General Information) |
| DoD Customers | Option 3 (Orders, Maintenance/Troubles, and General Information) |
| Wireless Support | Option 4 |
| Bill Group | Option 5 |
| Service@once Access Help Desk | Option 6 |
| Treasury Customers | 202-927-9000 |
| Escalation: | |
| Trouble Reporting & Escalation | |
| Email: | |
| General | wits.3.csc@verizon.com |
| Civilian Customers | witscivilian@verizon.com |
| DoD Customers | witsmilitary@verizon.com |
| Service@once Access Applications | serviceatoncesupport@verizon.com |
| Faxes: | |
| Civilian Customers | 301-282-1910 |
| DoD Customers | 301-282-1911 |
| Service@once Access Applications | 1-888-847-6213; 301-282-1660 (local) |
| Service@once Training Applications | 1-888-847-6213 |
| Address: | |
| 13100 Columbia Pike Silver Spring, MD 20904 Get directions | |
Customer Relations Management Center
| Solutions Brokers: | 855-482-4348 |
| FAX: | 202-708-0034 |
| Location: | 18th and F streets NW |
| Web Site: | GSA National Capital Region |
| Inquires: | ITCSC@gsa.gov |
| GSA Customer Support: | Solutions Brokers Info |
| CRMC: | 202-708-7700 |
| FAX: | 202-708-0034 |
| Location: | 7th and D Streets SW |
| Web Site: | GSA National Capital Region |
| Inquires: | wits3.accounts@gsa.gov |
| GSA Customer Support: | Contact info |
Joint Service Provider Service Desk
| Phone: | 703-571-4482 |
| Email: | usarmy.pentagon.hqda-ita.mbx.ita-service-desk@mail.mil |
Fort Belvoir
Business Office: 703-805-1130