Agway Energy, one of the former divisions of Agway Corp that was split out after a bankruptcy in the late 1980s, They retail gas and energy supplies to residential customers.  Formerly, Agway was a farmer's cooperative across multiple states. They filed due to problems at their Texas Refinery plant, where imported petroleum was distilled into various products.

These calls originate from the Southern Tier of New York State. Phone prefix indicates Endicott/Endwell area, outside (west) of Binghamton NY.   A legit company, that should not be calling people on the DNC list, but do.  Always, ask them where they got their call list from; those lists are provided by wholesale list companies, who are responsible for scrubbing your DNC numbers off before they are sold to the retailer (in this case Agway).  

The Customer Service rep (caller) won't know the answer, of course, but if and when they hear the question a sufficient number of times, someone will start asking the higher ups what is going on.  If they call a second time, ask to speak with a supervsior.  That should clear your number from their immediate list, but also ask them to follow up on why they were sold a 'bogus list of DNC numbers."