Click on tab to return FAQs listings. Frequently Asked Questions Topic: District of Columbia Child Support Hours Q: What are the operating hours at the District of Columbia child support office? Our office hours are from 8:15 AM - 4:45 PM Monday through Friday. In an effort to provide better service to you, we also provide extended hours until 6:30 PM on Wednesdays. Q:What are the directions to the District of Columbia child support office? From: - Street - City, State [or Zip] Q: Can I contact CSSD by other means if I’m unable to get to the office? Yes. You may contact us in writing by mailing or faxing a letter to our business address, by telephone or via the internet. If you are having a problem with your case, it is better to contact us in writing so that you and CSSD will both have an accurate record.    Mailing Address: Child Support Services Division Office of the Attorney General of the District of Columbia 441 4th Street, N.W. Suite 550 North Washington, D.C. 20001 ATTN: (Department/Contact Person) Fax Number: (202) 724-3710 * Include a department or contact person with all faxes if possible. Customer Service Phone Number: (202) 442-9900   Over the internet: www.cssd.dc.gov * select “Ask The Director” from the menu in the left margin, and complete the attached form.