These idiots keep calling my mums phone number every single day and leave messages which are dead silent who are these people and should be stopped it’s harassment my mum blocked the number it’s the (03) 9001 1516 number

Like many others I am constantly getting calls from number starting 03 9001 1XXX (last numbers keep changing). I don't answer and block them all but within a few days I get more of the same.
Annoying but just keep on blocking.

This number rang my mother asking to confirm our address and her name the caller wasn’t Australian she hang up and blocked the number

Scam

Variations of this number have been used to call me on multiple occasions. The caller never leaves a message.

Various numbers call me with 9001 as the first numbers. Call me repeatedly trying to get me to upgrade my hot water service through the Victorian Government. All disconnected Optus lines.
Indian call centre although there has been a "Debbie" "Richard' "Jason" and "Suzanne" I don't know any Indians with these names. Scam