All enquiries about United States visas, immigration or citizenship should be directed to the relevant United States authorities.
If you have questions about ESTAs and the Visa Waiver Program (VWP), contact US Customs and Border Protection's (CBP) Travel Communications Center on +1 202 325 8000.
If you're in Australia and have questions about US visas, immigration to the US or US citizenship, contact the US Embassy in Canberra or one of the US Consulates in Sydney, Melbourne or Perth.
If you're outside of Australia and not in the United States, contact your nearest US Embassy or Consulate.
If you're already in the United States, contact the US Department of State’s National Visa Center on +1 603 334 0700 or US Citizenship and Immigration Services (USCIS) on +1 800 375 5283.