You can also give feedback to the NDIS Commission:
They take feedback or complaints about services that you are not happy with. You can call them on: 1800 035 544. Or you can call the National Relay Service and ask for 1800 035 544. You can also do this online at https://www.ndiscommission.gov.au/participants/complaints. You can also call the NDIA on 1800 800 110.
You can have an Advocate or Representative with you when you make a complaint. They can give you support. To access information about Advocates you can visit this website: https://www.ndiscommission.gov.au/participants/disability-advocacy