Energy companies are pretty ruthless. A mate of mine had a small shop repairing old Triumph motorcycles. In the shop he had a small tv, a small bar fridge, 2 fluorescent tubes and a fan that was only used on hot days. His bill just started getting way out of control and jumping a thousand dollars at a time. I kept trying to work it out/sort it out and after several years they were claiming he owed over $10.000. In the end I went to his local MP and within a week they not only cleared the debt , but somehow they claimed they owed him money and sent him a cheque for $130. He immediately shut the shop, retired and moved up the bush, never wanting to come near the city ever again. In the end I never found out why the bills were going like that.