I received a call from this number but didn't answer it. I rang the number back and got a recorded message saying "thanks for calling us, we called you to offer you a great deal, we will call you back later" Whatever they're selling I don't want so will be blocking this number.

Phoned and said they were ANZ bank and to press "1" if I had not authorised a transaction for $900, "2" if yes ... I pressed "1" thanked me for my "response" and said they now transferring me to another section... AT which time I hung up.... I phoned number back and after a period, someone asked who I was ... English spoken - more than one person?

No message - blocked it

In light of other comments about this number I think safe to assume they're a "junk" caller.
Got a call from this number today and no message or button press to connect. I run a small PBX at home requiring a press on keypad to verify there's a human at other end. There wasn't any.

Rings and hangs up

Answered without any sound and hang-up from the other end.

calls often, hangs up without leaving a message. Who is this please?

Rings frequently....Blocked it..