[specialque]

Your state sucks, move. Seriously that is crap. That can never happen up here here in CT, but I guess in the backwards state of Georgia this can happen. You never entered into a contract with the roofing supplier, you entered into a contract with the roofer. I would contact the court and ask them to have the supplier furnish the contract that you signed with them to deliver the supplies. If they can't then they shouldn't be allow to put a lien on your house.