Tried to call the number back and got “Optus regrets to advise that the mobile number you are calling has been disconnected “

In bad english, a woman Said "there was an important call for me, trying to connect me now". Was still "trying to connect me now" 3 mins later, so I hung up.

spam
when answered a lot of clicking sounds. when called back- automated message in bad English

Caller: Scott

Called and asked for a Nelson. I advised im not Nelson, then proceeded to ask for a Mitchell. I pointed out im not him either and then pointed out that this was different to the name he first asked. He asked who I was and I told him I wasn’t comfortable sharing that information. I asked who he was and he said Scott, and I asked where he was calling from he said Perth. I asked if he was calling from a company he said it was regarding a personal matter. I terminated the call, called back and got an ‘your call could not be connected’ message.

Caller: 64240738

Asking for name and details right off the bat

Could be hackers so please my people be careful

I called back number (08) 6424 0738 spoke to a guy who said company name is Baycorp.