I have had a similar experience, I received a phone call from 'Statewise Emergency Response' saying I had an overdue account for advertising (which I had no recollection of) and I was to pay $450. They emailed me an apparent invoice also offering $100 off if I paid the amount today. The phone number on the invoice is (03) 9028 2668 but the address says Robina, QLD. Clearly a scam!

This is the return number listed on an invoice we received from Community Care for Kids - requesting payment to Homeland Media in Robina QLD for payment of advertising which we did not request and appears to be an invoiceing scam.

We have received phoney invoices from Homeland Media. I think they are a scam.
Statewise Emergency Services, and Community Care for Kids. Victorian phone number, which never gets answered.
And we never see a copy of the supposed advertising.