Caller: scammer

said they were from Telstra, we don't have anything with Telstra when I told them that they hung up. Block immediately

Said was from Telstra technical department re internet line. Hung up when I said bad line and what was his call back number. Sounded that spam call similar to a few years ago is back

Seems to be a scam

Tried ringing back & got message, "Due to temporary service difficulties we are unable to connect your call at this time. Please call again later."