Caller: Supposedly Telstra

Saying your IP address is about to change from private to public
I have no services with Telstra.

Calls constantly - once a day for weeks on end. I don’t know the number so don’t answer but they never leave a message. Tried calling back one day and you could hear it redirect to somewhere else because the ringer changed and then no one answered anyway. Highly suspect it’s a number being used by a scammer.