This number called me a while back (20th Feb 2024), so I don't remember the exact call. It would either have been one that just hangs up on you, one claiming to be from Telstra or the ATO etc., or one speaking Mandarin.

The unsolicited message:

We're so pleased to invite you to a special book chat event tomorrow (7/10/23).
Joining us will be Hon. Mick de Brenni (Qld Minister for Energy). Book your place here: https://events.humanitix.com/acfbsl-book-chat-3
Where: Logan North Library, corner Sports Drv and Springwood Rd, Underwood
When: Saturday 7 October 2023, 10am - noon (arrive at 9:45am)

I didn't answer their call and they didn't leave a message. Assuming its a charity that I've donated to in the past because they non stop call.