scammer electrical service people in the building

i am not sure what company they are from but 3 guys in suits are ringing every body's bells saying that con ed is going to raise every bodies bill 22 percent next month.
if we sign up with them our bill will only go up 14 percent.
i have no idea on what is going on, but generally i don't trust anybody that doesn't leave me any paperwork to look over.
i have heard a lot of negative stories about these interconnect companies, they usually promise one thing and lots of hidden charges and you end up paying more and have a hellacious time getting switched back.