I rang them back and refuse to let me know who they work for

Block this phone number from Credit Corp and report Credit Corp to the ACCC Scamwatch https://portal.scamwatch.gov.au/report-a-scam/ and AFCA https://www.afca.org.au/make-a-complaint.

If they are debt collectors they can't call more then 3 times a month they can't call 3 times in one day they have to split it up to once a week for 3 weeks anymore then that it is harassment

Caller: (02) 4302 4805

Refused to ID who they are.

Caller: I don’t know

They called me twice in 5 minutes no voicemail left nor answering calls back

I called them from back from a private no, I gave them my name but refused to give them other details until they said who they were.
They told me they could not, I told them to call back when they could.

Caller: Credit corp

One of their many many numbers. They call everyday on a new number. If you don't recognise a number don't answer and block.

Caller: Credit Corp

Scumbags pretending to be debt collectors - accuse you of having an outstanding debt, then demand you pay up or they ruin your credit history.

Is it when you call back you get charged?

tried to ring this number but no one was answering

no clue, refuses to ID who they are...BLOCKED

Keeps calling , never leaves a voicemail

I called back the number (02) 4302 4805 and the guy on the other line did not mention the company name