Caller: Someone called Grace.

Wanted to make contact with a former neighbor at nearby address. Sounded fishy. Ignored and blocked.

I called back number (08) 6214 4566 reached voice mail but did not say for what company.

They are debt collectors with a lot of options and payment plans to pay off your debts, genuinely there to help you and get rid of the debt monkey of your back. You need to speak to them and negotiate with them to get a good deal.