Assumed scam. Received a call from 08 8255 3426 this afternoon purporting to be the Do Not Call Register. Tried calling back but number is 'not in service'. Caller also gave me 1800 875 048 to call back (I tried confirming last 3 digits but couldn't catch it). This number is also not Do Not Call Register, it's a property company). Female caller with Asian accent, spoke very fast. Caller had some of my contact details and credit card details and wanted to confirm expiry date. Said we had reported a nuisance caller (which we may have done). Said if we paid special price of $49.99 (normally $99.99) we would never again receive unwanted calls. I was told that our existing free registry was only a limited service and our information was being leaked.