I asked what company they are and he said they have a diverse range but wouldnt tell me what they do. Wanted my name so he could find out who called me. I hung up.

Strange behaviour. I called back, and the guy pretended to not know that he had called me. Then offered to find out who had called me. I hung up after that.

I called back the number (02) 8199 2505 and the guy on the other line did not mention the company name