They ring you answer they wont speak and just hang up.
Obviously the call is logged as answered even though they say nothing.

not spam maquarie bank card services . but constantly calling .

keep calling

Caller: Card Services Macquarie Bank

I rang back and after asking at least twice she finally told me she was calling from Card Services Macquarie Bank to tell me my cc was over the credit limit. Which it was because they'd charged me a late payment fee for missing the date by 1 day.

Caller: Card services

Calling cause your card payment is a day late

Has called me several times over the past few days - on my mobile. When i answer they hang up. Comes in as a wifi call.

I called back number (02) 8216 0600 reached voice mail but did not say for what company.

no response from caller when answering the caller with "hello" only