I called back number (07) 3422 6504 spoke to a woman but did not say for what company.

Debit collectors agency, newsense caller, Catherine was her name nlc the company, refused to give me any details about an "unpaid debt " that I apparently owe & demanded my personal details to rectify the issue...

Called looking for my dad who doesn’t speak English. My dad doesn’t know who this Catherine is!

called my brother and said it was a private matter , and name was catherine

Caller: Said her name was Catherine

Same as above, but asking for workmate contact details, saying she had called him but no response... Saying that she was dealing with very private matters re workmate...

Caller: Katherine

Refused to tell me who she was

I called back number (07) 3422 6504 rang once then goes to busy tone.