called and hung up, id said "customer dept"

same here  -- I think this is a new number , left no message, out of Scranton area, probably another electricity rate scam as generated by the "deregulation" mania they have inflicted on us.

Yep - got the same thing. Caller ID came up Customer Dept. They left no message.

Caller ID said Scranton PA.

I am on the Federal Do Not Call list but they call anyway. Robo call announcing I "...am eligible to save money on my PECO bill, press 5 to speak to a representative..."

Your PECO account number is gold to them, don't give them your PECO account number. With your PECO account number they can change your energy supplier. Put them on HOLD while you pretend to get your most recent PECO energy bill to prevent them from calling and bothering someone else. Be polite to them but make them wait, waste their time.

Yep - another boiler room operation trying to get the sacred PECO account number.  Just waste their time while you are "looking" for your account number or most recent bill.