This caller rang 4 times on my mobile and when I rang back from a public phone after a few rings it went to engaged and this is most likely a SCAM call and I would advise to NOT answer and if you need to check do what I did and use a public phone which is free of charge and the caller cannot trace you or corrupt your mobile if you answer or call,

I don’t recognise this number. They rang, didn’t leave a message. I’m assuming it’s another nuisance call. Reporting in case others receive calls

I don’t know any person in Sydney and they didn’t leave a message.