A good rule of thumb is that if you are sure you are on the no call list, yet get phone calls from an unknown numbers (regardless of what they claim), it's most likely a scam. I've been monitoring all the "oddball" numbers that I get calls from (I am on the no call list), and over 90% of them are SCAMS. Don't pick up unless you want to waste their time. ;)
I don't know who is calling from this # 203 273 8586 . When I call back the phone only ring once. Nobody pick up. The name that shows in caller ID is Startel LLC...
This person called from Startel couple of weeks ago. I'm in CT also and complaint from me is the same as most comments, here, about it being another electricity provider. Funny thing here is this guy called and asked for me by name. I asked him how he got my name, since the electric bill isn't in my name...duh...
I imagine he was looking at his own caller ID which I think some phones have. I am also on national do not call list and advised him of same. He got very insistant and argumentative, I gave him an earful and told him harrassment is not the answer and hung up on him.