Uk company trying to sell vitamins. Targeting elderly people. They know your name and try to tell you you have filled out a survey in Sydney. They are ringing from the UK and tell you that they are calling from Sydney. Telling you you live in Sydney regardless of living in another state.

Caller: Spam

I endorse previous comment. Unwanted marketing.

They lost interest and hung up when they realised they'd phoned a company not a senior citizen. Definitely a scam.