Called back and got a message saying the call could not be connected

Could be an automatic calling machine. Did anyone get a call from sales people soon after that?

Caller: 02915993569

Called, answered said "Hello", computerized voice said a word, didn't understand it then they hanged up.

I tried to call back the number (02) 9159 9359 but the person who picked up the phone disconnected the call

Missed call from this number. No message left. Tried to call back within a couple of minutes of original call and the number was disconnected???

Didn't pick up this call and called back. It could not be connected?

Called. I answered and then they hung up.

When trying to return the missed call it tells you that the number can not be connected.

cannot connect number has been disconnected. I rang this number about 2 mins after the missed call.

Calls and doesn't leave message.

Tried calling my mobile during work so I didn’t pick up. Possibly a Sydney #. Hoping someone else knows who/what? Possibly telemarketer/ nuisance caller.