The U.S. Office of Consumer Affairs (Department of Health and Human Services)
justiceDepartment of Justice, Justice Department
Federal Works Agency ended in 1949.
Federal Works Agency was created in 1939.
erisa?
A federal agency is a specific sect of the government. Some federal agencies include the Federal Bureau of Investigation and the Census Bureau.
FEMA
FEMA
Federal Trade Commission
The federal agency that deals most directly with the safety of products is the Consumer Product Safety Commission.
Federal Election Comission
Department of National Statistics
The FDA (Food and Drug Administration).
The Federal Trade Commissions (FTC): Bereau of Consumer Protection
Look up consumer protection online. Sometimes it is in categories, but your state attorney general has a hand in consumer protection and there was a federal agency but Trump has taken some of the consumer protections away so it may be gone.
justiceDepartment of Justice, Justice Department
The Department of Consumer Affairs of California is overseen by and part of the California State and Consumer services agency. This sort of organisation will be in place for all Departments of Consumer Affairs for each state and the federal government.
Several federal agencies handle consumer complaints relative to their particular area of authority. You would have to be more specific about WHAT type of complaint about WHAT product or service.