The "US Renewable Energy Program" has been calling my landline almost daily for a few months now. I never answered nor pressed a number to be removed (that just let's them know it's a good number!)
Now, they've finally found my cell number & started calling that too.
There's even been an article in the local need about this company - seems that altho this robo-calling is illegal, the FCC "rarely prosecutes". Harrumph. :-P
At least I can block it on my cell phone!