After 18 months of complaining and disputing their astonishingly inaccurate meter readings, proving photo evidence of my usage and submitting 4 formal complaints, I've finally bit the bullet and gone to the energy ombudsman. They charged me for 2,200kWh of electricity in one month - almost as much as the average household in a year! My readings and photos show I used around 2,900kWh whilst UW are changing me for over 9,000! They owe me so much money but they think we owe them money so I can't even leave them! I'm stuck until the ombudsman can sort it out. Ombudsman awarded in our favour and UW have actioned all the remedies, which included nearly £1,000 of refunds - incredibly, they have STILL managed to get it wrong. I have submitted ANOTHER complaint to get the rest of my money from their poor maths. The amount I had paid to them, less the costs of their billing, did not tally with the correct figure. They assume I owe them money when in fact their own bills show they owe me money. I submitted a complaint via their website and waited 10 days. I subsequently rang to complain and was hung up on twice, so I wrote a letter. I've since tried calling 10 times and being promised a call back "as soon as possible" with no such response. Their complaints procedure says they will deal with a complaint in 2 days - it's now been a month since my original complaint. I WILL go to the ombudsman for a second time. I have now moved my energy to Octopus who have so far been GREAT Avoid like the plague - I am never recommending or using UW again.