GSA offers a variety of support services.

• National Customer Service Center (NCSC) 
  provides GSA acquisition customers with assistance and information about purchase orders, shipments, billing, and schedules, and resolves problems.
  
  
• e-Resolve 
  is an online, self-service tool that allows customers to directly report problems with a requisition or GSA Global Supply order shipment.
  
  
• Customer Service Directors 
  provide personal assistance to GSA acquistion customer accounts. 
  
  
• Vendor Support Center 
  is an online resource and call center for vendors to get information, review and report sales and fulfill contract administration requirements.
  
  
• Real Estate National Accounts Program 
  partners with GSA's real estate customers to help strategically plan and satisfy their unique business objectives.
  
  
• National Contact Center for Citizens
  connects citizens and consumers with specially trained staff who answer questions in English and Spanish about all aspects of the federal government.
  
  
• GSA Regional Offices 
  offer local support to GSA customers and government vendors throughout the 50 states, U.S. territories, and overseas.
  
  
• Additional Online Billing Resources and Tools
  
  
• DoD/GSA Partnership Information