I'm guessing spam/spam as they never leave a message message

I believe all of these calls of from The Kindness Project which is some kind of scam. I get calls from similar numbers and have blocked about a dozen in the past months! I just keep blocking all numbers that are (02) 5133 5230, 5236, 5229, 5232, 5239, 5231, 5238, 5235, 5237, 5242, 5240, 5245, 5246. Their list of numbers they can use is seemingly endless!
When I have answered in the past, it takes ages for someone to respond which is why I block them all the time now.

Constantly ringing
No message

Spam....they keep calling but hang up!

Caller: Suspected Spam

Came up Suspected Sapm on my phone, continually ringing, never leaving a message; good enough reason to not answer/screen and block calls. Ring daily changing the last few digits of the number, always begins with 02 5133 ....

My phone's smart filter says suspected spam. I get frequent calls from similar numbers ( varying in last 2 digits) and ignore. No one leaves a message. May start just blocking them.

Caller: (02) 5133 5230 (02) 5133 5231 (02) 5133 5232

Rings a few times a day from related numbers. No message left.

Serial pests who use a range of numbers from (02) 5133 5230 to (02) 5133 5245 and any in-between with the last digit different.

These people are driving me crazy, they ring me twice a day on various combinations of numbers (02) 5133 5239,5230,5231,5234,5233, 5242. I block them every time but they just keep trying on a different number. How can you stop this!

Scam number

Another spammer