I answered, they stumbled to talk, then said something about "Park Power Services", followed by my favorite part; "Sir, am I calling you?" 'yes ma'am you are' "oh... Never mind sorry for the call, bye" Needless to say these unprofessional scammers need some rudeness and grammar lessons!
Park Power (https://goo.gl/sd9hom) calling about my PECO bill. Don't know if it's a scam or not, but it's rarely a good deal long term to use a power broker over the utility. Most likely some telemarketing company calling on behalf of Park Power.