Ovo treat customers with zero respect and are nothing more than bully's. I moved and was honest with ovo. My account was in credit. It was refunded back to me but the person at ovo made a mistake. They apparently refunded too much. A year and 2 months later they demand nearly 600 pounds..I phone them and they are very aggressive demanding the 600 pounds. I make a complaint and the complaints team say you don't owe 594 ie nearly 600 put 134 and due to this error we ie ovo made we will take 60 off. I email the complaints team and get no reply. In the mean time the customer services side still pursue claiming back the nearly 600 pounds and ignore me totally. I get bombarded with emails and texts. I go to the energy ombudsman and ovo put the nearly 600 pounds in the hands of a debt collector who start emailing me saying I owe 616.. the energy ombudsman cannot quash bills and if ovo had spoke to me with respect and not aggression and actually known what they were doing it would have made this experience far better. It was ovos fault I owed them money. I'm going to write to the owners of ovo on compsny house. It's appalling service and ovo have treated me very unfair and caused the nightmare. Its nice 19 months since I moved and they persist I owe 594 when I do not. Ovo will not listen and should be ashamed. Customer service is very bad