Came to my door, asked for the bill, and misled me...

Came to my door, asked for the bill, and misled me into signing up with them. When I asked him about their company relationship with nationalgrid, he was vague (as if he was an employee of nationalgrid). This makes me feel that it is dishonest and unreliable! Recommend that be honestly introducing oneself as a third-party company at first instead of hyperbolical bill discounts.