Caller: someone saying they were from Telstra 0420 040 240

a man called and said my internet speed was slow and that there were other users trying to access my wifi. they asked me about what kind of phone I had but then I told them i wasn't comfortable with sharing my information with them, he asked why, what the problem was and then I hung up. I contacted telstra and they confirmed that no one from their end had called on the day and that this mobile number was not theirs.

Picked up call but said nothing so they hung up.
It's so obvious these are not someone unsure of their own actions.
I have blocked my number

Caller: Scammers

It comes up with “can not be connected” when you call the back.

It’s a scam

Caller: 0420 040 234

Scam, say they are Telstra and try to get your ip address

claimed to be from telstra advising internet was having issues, i'm not with telstra, caller hung up

Claimed he was from the credit card fraud department, wanted to report that my card was used frequently, $800, and if I wanted to cancel the transaction. Then wanted my details, DOB, Name etc.. An obvious fraud/scam call to get u to panic and give the caller personal details, SCAM.

Called but I didn't answer. Glad I didn't.

Caller: Heavy accent Indian female

Purported to be from Telstra, told me my Telstra internet was reporting errors, however, I am not with Telstra! Indian female abruptly hung up when I asked her to put me on to someone who spoke intelligible English.

Did not leave a message. Phoned mobile phone.