Source: https://www.ndis.gov.au/participants/your-rights-and-responsibilities
You have the right to:
The NDIS Quality and Safeguards Commission works with all providers so that you can get supports that give you choice and control. They have a participant information pack that helps you understand your rights.
Registered providers need to meet quality standards , which show they provide quality, safe supports to participants. The standards also help participants to know what they should expect from their registered providers.
All providers must adhere to the NDIS Code of Conduct .
https://www.ndiscommission.gov.au/about/ndis-code-conduct