Automated message that calls 2 times a day saying something about internet and press 1 to connect to National Broadband ( Non existant company). If you press any number you will be put on the potential sucker list so dont do it. I have registered my number on the do not call list will see if the calls stop.. check out the NBN scam link; https://www.scamwatch.gov.au/news/watch-out-for-nbn-scams