Smart One Energy LLC scam to get you to switch to a CTA (gas commodity suplier) CA

I got a call from someone claiming to be calling from my gas company, saying we qualified for a discount. I didn't have a good feeling about it, but they must have caught me in a weak moment. When they asked if I consented to receive this discount, I said, "yeah, I guess so". I stupidly gave them my service agreement number, not knowing what that meant. I immediately called my gas company to ask about the call, and they knew exactly what happened, and said that I would soon get a letter from them confirming the change.

When I got the letter, I immediately called the number provided for Smart One Energy. I called, and although they didn't say, their office must be on the east coast, because they said I was calling during non business hours. I called at 2:45 Pacific time. I will try again tomorrow. In the meantime, I am fuming: at them, and at myself for allowing this to happen. I'm usually not so trusting. Should have followed my gut feeling. I just hope I can get this taken care of before I get charged for their "discount". This is total fraud. The other company name was never mentioned, and I was led to believe I was speaking to someone from my gas company.