203-643-9122

My mother got a call from this number, and the person claimed to be affiliated with United Illuminating, and asked for information from her bill.  She declined.

Caller said he could save me money on the generation portion of my electric bill. He mentioned CL&P, but my electricity is delivered by UI.
Asked him why he was calling as I am on the DNC list. Said it was a mistake and I would not be called again. Caller id was "unavailable", not a good way to get any cooperation from me. If it is a legitimate business and they don't display their name, they are not going to get very many to answer their calls. If it's a scam, come on at least get creative with a name on the caller id.

Yes, I have answered several calls where a person with an accent offered a 20% savings on electrical bills. They needed the customer reference number from my bill. Sounded fishy to me.