I just got the same call 3 times in 15 minutes from 201-200-3785 - no one answered it was dead silence. I tried to do reverse look up and it came up unlisted. When I called the number back it says it's disconnected or no longer in service.
I had a similar experience. A guy called Dion offered me 5% discount on the PSEG electricity bill and started to ask me verification questions. I told him that I am concerned about identity theft and asked him to give me a number so that I can call back and verify that they are genuine. The guy immediately hung up.
Same thing here. They said they were from palmco and asked for my pid # when I began asking more questions they hung up on me. When I called the number that came up on the caller id it was disconnected. i called pse7g to verify what nthis man was saying and they said it was a scam! DO not give out any info. You can also file a complaint with the board of public utilities.