Same thing - multiple hang-up calls a day. I called the number back and it is Consumers Energy. The rep stated ,"Oh, I'm sorry our autodialer is not working correctly.........". She then wanted my business name to remove the number from her list. I told her the number was all that should be required and I did not feel any other info was necessary. At that point she took the number (amazing how that works) and said it would be removed. I'm listed on the Do Not Call (unless you feel like it) List.