avoid this company in all costs, I moved to my new property and the previous owner was using Npower. I was out of gas for 2 months because I didn't have top up card for pre-paid gas meter. I rung Npower more than 10 times with request to send me new card. First they said I can pick up the card from given address of the shops when i went there they didn't have any and it was waste of journey. Than I asked Npower to send me the new card but they never send me. Eventually I had enough of them and switched to British Gas. When I switched to British Gas, Npower started to harass me by sending letter and calling me and asked to pay the previous owner debts. I made complains 5 times over the phone, each time they denied saying they never received any calls from. It's very badly managed company and in total mess!