Did not leave a message - based off of other reports found after a quick search engine lookup; it appears to be a scam/phishing number. Take this with a grain of salt, but there are only a couple reports claiming that to be the case.

These couple of comments suggested the Caller is (or posing as) an ambulance-related service. If you have had an ambulance called out recently, it may be worth checking for yourself.
Not sure if any services like that would call and not leave a message - particularly if it was a billing matter (as the source of the found information claims.)

If I figure it out I will update this

Caller: Ambulance victoria accounts payable

Called about an outstanding bill for using the ambo back in July. Tho we had ambulance cover. For some reason new address didn't get updated in their system which was odd coz we updated it as soon as we moved to a new house back in May 🤔 Did say they will send email to get the membership ID but never received the email. Have called ambulance victoria payable but number was different to who called.

asked for the accounts payable person and had the persons name... saying that they will send email to explain what they want . but never did. he said his name was John

Caller: access mercantile services

Called no message left. There debt collectors

It's the height of rudeness to not leave a message. Especially during business hours, most of us aren't allowed to take personal calls at work

No message left