This number has been calling for a few days. When I answer they hang up

Identified as spam. Blocked

Caller: (02) 8520 6001

Spam! This number (02) 8520 6001 called me 5 times in 2 days, end up by voice mails with repeated Chinese sentences. Happens the same with number (02) 8594 8355 and (02) 8595 9258.

I have received 4 calls in a single day they say nothing. It gets very annoying since I don't know how they got the phone number.

they call and hand up

Caller: The Referral Network

SPAM
I politely told them I was not interested and please remove me from your list and they hung up on me! So rude!!!

(02) 8520 6001 called me for almost 2 days, when pick up the phone, 3-4 second later, they'll end the call!. Already did this twice the morning, and afternoon. Called them back and it was an automated teller saying it was a "Referral Network" company. How annoying!

I called back the number, got IVR saying it was the Referral Network. No idea how they got my number

Caller: ‭(02) 8520 6001‬

Spam

Caller: Unknown caller; their number answered with "Referral Network Group"

This number answers with "Referral Network Group". They invite you to add your number to their do not call register by giving them your number! No idea who they are, what they want or how they got my mobile number. Presumably via some data breach or a company I've done business with passing on/selling my mobile number to others.