I have also blocked this number - 2 times in 2 days. Message is only 'hello and my name'. They can't even get my name correct (just a slight modification - put an 'a' at end of my name)!
Not bothering to call back.

Ive blocked this number along with the other 02 or 03 calls I get at the same time 2 or 3 times a week

Says from Melbourne, this number calls at least 3 x per week. Nothing at the other end when I answer. Does not leave a msg. I have blocked the number.