WHO ARE ORIGIN ENERGY?

I get SPAM calls from a voice service from this number sometimes twice a day:
03 54481500
If you ring the number back you get an answering machine for 'Origin Energy'.

Why do they keep calling?
I did some research into who they are with the intention of contacting them to remove my number from their list. Guess who answers when you ring them? No-one! That's right! It's yet another answering machine!
I might just start calling them every day and leaving messages and see if they enjoy that:
"Phone us on 1800 526 369"

I have contacted the ACMA and lodged a complaint & added my number to the Do Not Call register (Australia).
I also learned that Origin Energy are a part of the coal seam gas push. Here is their propaganda. All lies:
http://origintogether.com/
Here is the truth:
"There is mounting evidence that CSG mining poses substantial risks. Stop CSG Illawarra formed to express community concern about these risks, including:

    Threats to water systems and supplies
    Leaking methane;
    Health impacts;
    Above ground footprint; and
    Related seismic activity."

http://stop-csg-illawarra.org/