https://www.maitland.nsw.gov.au/residents/rates/pay-my-rates/change-contact-details-form
Change contact details form | Maitland City Council
Update your contact details if you have moved home, changed numbers, or have a new name.
change contact detailsformmaitlandcitycouncil
https://www.service.nsw.gov.au/guide/change-nsw-details
Change contact details on NSW Government services | Service NSW
How to make changes to your address, mobile number and email for a NSW licence, account, registration, E-Toll account, permit or certificate.
change contact detailsnsw governmentservices