This guy called telling me my home energy bill was about to go up. I could tell he was about to try to sell me something.  When I told him I was on the "Do not call registry", he started yelling at me saying "that doesn't matter!" and then "is your electric bill more than $100 a month"?.  When I told him to take my name off of his list, he started yelling at me again.  What a way to do business!  I am going to file a complaint.