those are scam calls - hang up when you get one message that nbn will be disconnecting then diverts to operator with bad line?
2 complaints this year
2 total complaints
Anonymous on (02) 8523 9036
Returned call this afternoon 12/02/20 - Optus advises the number you have called has been...
Anonymous on (03) 8202 5450
scammer - when i called back, an old fashioned telephone ring sounded, almost deafened me! ......
Niels on 0491 625 252
A scammer find my number on gumtree
Anonymous on (02) 7202 2369
About stock trading Scam
Anonymous on (03) 8560 0523
As soon as I answered they hung up. I don't ring back.