Caller: Telemarketers

This number was alerted as suspected spam (Telemarketers) by my phone but it was not reported as such anywhere. So I rang it back and a recorded message said something about them ringing to discuss offers for my internet and communications service. At least I didn't get a "this number is not in service" message. Blocked the number now.

Multiple calls in a day. No messages left.

Someone about NBN I asked where they got my number from and they hung up

Caller: Optus?

Said they from NBN (although I am sure they meant Optus), offering me a 4G+ (Wifi) router on Optus, up to 50 Mbps...
On my FTTN NBN line I am getting 70+ Mbps, when I informed them of this fact, the call quickly ended

Yet another power telemarketer 😕

tele marketing.