Final answer:
Contact the local government or municipality responsible for maintaining public spaces.
Step-by-step explanation:
For the clean-up of overhaul piles left in public ways, the appropriate authority to contact would be the local government or municipality responsible for maintaining and managing public spaces. This could be the city or town council, public works department, or the department of transportation, depending on the specific jurisdiction. These authorities would have the resources and knowledge to coordinate the clean-up efforts and ensure the public ways are properly maintained.