I had to put 1 star on this post, but, there is no minus star . OVO, as a company, appear to be overwhelmed by the client base they acquired from SSE. Their technology does not have the capacity to enable precise calculations that are true and correct. Furthermore, their algorithm for estimation of advanced usage leaves much to be desired. Offwatt and Offgen should have a serious investigation into the operations of this company. The level and diversity of complaints posted on various social media, suggest that this is a company in a most serious administrative crisis. Swift action is required by the company or government to stablise the situation before it attains an uncontrollable debacle. Meantime, do not envisage the engagement with this company until they get their structure customer friendly.