Called today. Hung up after I answered.

Called me and said they were from Penelec(my electric provider) and wanted my customer number and he would lower my rates. This # is not a Penelec number. I called Penelec.

Rule of thumb:

If the fourth digit of the phone number (the one after the area code) is less than "2" (Note that here it is a "1"), the phone number is either faked or coming from someplace other than the US or Canada and (unless you have reason to be expecting a call from outside at least these two countries AND from this particular number) should NOT be answered.