PARIS – France is launching a new government service empowered to take money directly from the bank accounts of parents who fail to pay child support, aiming to help many families — the vast majority of whom are headed by single mothers — emerge from precarious financial situations.President Emmanuel Macron denounced in a tweet unpaid child support as “an unbearable situation for hundreds of thousands of single parents,” before visiting a benefits agency Tuesday in Tours, in central France, which is providing the new service. “Thank you” for the measure, a single mother of three told Macron, detailing at length her personal situation, involving domestic violence and harassment from her ex-husband and deep financial difficulties.