How do I remove my name from an Australian Business Connections Listing?

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Recently, some unnamed companies have been pestering me regarding "investment oppurtunities". When I declined I asked the phone operator where she got my name and where she was calling from. She vaguely explained she got my name and workplace phone number from Business Connections Listing but refused to advise where she was calling from, and the call became rather heated. I don't know how my details became public?

Is there a way to find out where my name or business could be listed or remove my name from such a listing?

I know the Do Not Call registry may not help, and I am only an employee not the owner of the business.