Spam robocall. Disconnected number.

Caller: (02) 8378 7920

No message

I answered a phone call from this number because I am currently looking for work. The phone was answered by a male with a foreign accent which sounded middle eastern. I asked who was speaking and they said very slowly and haltingly that they could not quite hear me. As they could not state their name and business I disconnected the call and blocked the phone number.

I also received a missed call from this number and it too is a disconnected number.

I called back number (02) 8378 7920 it says the number we have dialed is not in service anymore.