Columbia subject headings:
Administrative agencies--United States--Communication systems.
Consumer satisfaction--United States.
Customer services--United States.
Telephone etiquette--United States.
Harvard subject headings:
Administrative agencies--United States--Communication systems.
Consumer satisfaction--United States.
Customer services--United States
Telecommunication--United States
Telephone etiquette--United States.
Princeton subject headings:
Administrative agencies--United States--Communication systems.
Consumer satisfaction--United States.
Customer services--United States.
Telephone etiquette--United States.