Ontario's ombudsman says Hydro One "lost sight of its public interest purpose" and failed to consider the impact on its customers of a new information system that resulted in massive billing errors for about 100,000 households. Andre Marin says his office was flooded with 10,700 complaints from Hydro One ratepayers about over-billing or estimated bills, and what he calls "outrageously bad customer service" as it scrambled to fix technical glitches with the new system.