They totally messed up the change of contract from Scottish power. Within about month of the contract commencing they sent me a letter threatening to break into my house, by applying to the court for a ruling to allow them to force entry and they would then charge me for the cost of the court order. This was because I had repeatedly refused to allow then access to my meter to allow safety checks to be carried out. When I asked them how I could have repeatedly refuse them access when I had only been contracted to then for such a short period they told me they had repeatedly requested access the previous year. When I told them that I did not have a contract with them the previous year, they told me that the requests were probably made to the the previous occupier of the property. When I told them that I had owned the property for 8 years I got no response. With about 3 months they imposed a standing charge on my bill, when one of the primary reasons I switched to them was to avoid a standing charge. After about 6 months I switched supplier to Ebico. Twelve months later NPower sent me an invoice stating that they had miscalculated my bill some 15 month previously. When I asked for details I was told it was because they had a computer error 15 months ago. I stated that if I buy a car I do not expect the garage to visit me some 15 months later and ask for more money as they had undercharged me initially. N power stated that I had not told them the initial meter readings when I commenced the contract with them, when asked how they ever managed to calculate the bills I was sent they said they used estimated readings, when asked what these readings were they could not tell me as there had been some confusion. I told them I would write to all of the consumer magazines I knew and publicize my experience ie the fact they threaten to break into my house etc etc. Then I was telephoned and offered about 30 quid as a gesture of good will if I did not attempt to publicize the facts. I said that I had a social and moral responsibility to protect others from an organisation such as N power. The money was increased to about £80. I then received a surprise parcel containing wine and a scarf, which was delivered to a neighbor, that I had had previous problems with , causing me further anxiety. Additionally, a gift of wine wine to a teetotaller is of no value, plus I suspected it may have been laced with God knows what. Do not do any business with this company as like me you will regret it for a very very long time. Plus no one believes your story, but I swear this is the truth . YOU HAVE BEEN WARNED