Calls no stop! Tried calling it back and it says it’s unavailable

Rang landline, not answered. Checked against my scammer database (EXCEL) and looks like the following:- 0480 038 611, 0480 038 717, 0485 800 109, 0480 039 792, 0480 039 792, 0480 041 158, (07) 5690 2000, 0485 900 032, All numbers are associated with Pivotel Satellite Pty Ltd. All have been reported to Do No Call Register (for what that is worth).

Called mobile and when rejected, did not leave a message. Unlikely to be a legit caller or not a nuisance / chugger.