calling every day, never leaves message, caller ID lists Discount Center. Tried to google, but didn't come up with any information on a Discount Center in/around Montgomery County, MD with this number. They are beyond annoying at this point...
UPDATE * Finally got frustrated and answered. They call several times a day and it was getting to be too much. Anyway, it was a recorded message regarding some program for people with PEPCO power to receive assistance with their bills, or some kind of credit program - likely to do with the impending raise in electric rates. I don't have PEPCO so I didn't listen to it thoroughly, but it gives you an option to press "3" to be removed from the calling list.