An investigation is about to begin into complaints about bills and customer service at Hydro One. Ontario Ombudsman Andre Marin says he will focus on the transparency of Hydro One’s billing practices and the way it responds to customer concerns. Marin says complaints about the giant utility have risen steadily in recent years, and more than doubled since 2011-12 and most of the complaints come from customers who believe bills are wrong, excessive, duplicated, unreasonably delayed or estimated based on unclear criteria. Marin says his office has experienced stonewalling from Hydro One, the government-owned transmission giant that also serves as a local electricity distributor for customers in smaller and rural communities. He says his staff experience the same problems as customers when they call Hydro One, a situation he calls alarming.