Energy comparison service. Very pushy. I was transferred between three people in 15 minutes. Then, when I didn't proceed, I received another pushy phone call back asking why not.
They literally do the job of the government Energy Made Easy website.

I called back the number (03) 4213 8001 and reached vm that did not mention the company name

Caller: Energy harrassment

Frequent calling, refusal to remove your name from calling list