Philadelphia, PA calls are a scam

[drp31]

I constantly get phone calls listed as Philadelphia, PA with no area code only a phone number. Nomorobo does not stop the call coming thru because they think it is a legit call but it is not.  Either a tape comes on trying to sell you a different electric company to go with if you are with PECO or the line just stays open for a few minutes before you get a dial tone. This is extremely annoying, these calls come in at all times of the day or night.  They are listed on the Verizon call list as a 215 area code but they are not , I tried & a tape comes on saying the number is not in service.  Verizon needs to stop all these calls listed from Philadelphia, PA because they are not legitimate calls & they need to advise Nomorobo of this scam .