I called back number (02) 8039 4610 reached IVR for a company called Dun & Bradstreet.

constantly receive phonecalls from this number. Refuse to answer questions about why they are calling when i ask. They keep calling on different numbers but are the same people

Called me 3 times and every time I call back they tell me my file is paid and closed so don't know why I'm receiving calls. But yet still keep calling.

I did not answer the phone quickly enough and the call went to my message bank. A recorded female voice said it was a message for Ric (she did not say who was calling) and that it was important that I call 1300 664 725 and quote 25875858. Last time I received a call from this number there was a real person on the other end who wanted me to confirm my identity by giving her my date of birth. I did not and asked who was calling and why. She said it was Dun & Bradstreet and that it was to do with Optus. I told her I have no business with Optus, told her she was trying to commit a fraud, told her to f... off, blew a referee's whistle and hung up on her.

Yep, thats Dunn & Bradstreet debt collectors

I called back number (02) 8039 4610 reached IVR for Dun & Bradstreet debt collectors.