Repeated calls not leaving message, call back and the number is always engaged. Call centre?, scammer?, auotdialler?

An automated message claiming to be calling about my visa/Mastercard.

had a few from 03 numbers in past few days asking about if im the one that pays power bill then hangs up

Caller: Scammer

Landline number (03) 9123 1024 cold called me yesterday afternoon Wed 23 Oct 2024.
When I picked up, they hung up on me.
Tried calling (03) 9123 1024 back immediately 3 times, but you can't get through
"The number you have called is not available from this service" is recorded message you hear each time I tried to return call.
Blocked (03) 9123 1024
Reporting this scammer via text message to ACMA Spam Watch 0429 999 888

Caller: Scammers claiming telstra

Said they wanted money for my Telstra bill. I’m not with Telstra. Scammer

Did not answer, went to my voicemail that says if this is not a scam call leave a message or I will block your number. No message, number blocked, then looked it up and found this amazing number of reports.

Caller: Allegedly PayPal Security

Allegedly calling from PayPal Security about a $799
Transaction. I asked what the email address linked to the PayPal account was. When I started to ask Qs they hung up. Scam

Caller: Male with an Indian Accent

Called to ask if I had sent $900 from my Visa to New Zealand. When I asked what bank I had sent it from he said ANZ. When I said I didn’t have an ANZ account he hung up.

Caller: Obvious scammer

This caller makes regular calls and hangs up when the answering machine connects.
Unfortunately I am unable to block this number.

Definitely a scam call.

Caller: Not Optus

Automated messaged purportedly from Optus saying "Your service will soon stop working".
I have no services with Optus.

Caller: Peter

Scam. Fraud.

Caller: Visa

Husband took automated voice message about his Visa card being debited an amount, it okay press 2 to dispute press 1, he hung up

I got the same today, from visa/mastercard saying that there is a transaction of $1299 and if I want to approve it to press 1

Called and hung up. Obviously scam call. I don't answer unknown numbers, usually suspecting scammers are calling.

Caller: Amazon Iphone calls

Scam call, wanted my home details to send me the iphone from Amazon. I told her to stop being a scammer and she started humming a tune - accent from India.

He/she waited a bit then hung up. I have blocked the number.

My Telstrs phone identified call as a Scam.

Caller: Scam

Claimed to be from Telstra telling me that my I.P. address has been hacked and is being used by foreign people. Wanted me to down load a program to give remote access to my p.c. Became argumentative when I refused.

Caller: Scam

Call and say they’re from the NBN. They hung up as soon as I said I knew it was a scam