Scottish Power were doing (reasonably) well then it all went wrong. I built up a credit for the winter, they returned it to me. I didn't ask for it, they didn't explain why they did it. Then I found i couldn't log in. Their system refused my email address and my password. After endless emails, which showed clearly they had no comprehension of the problem, they set me up a new account. It won't let me in. The one and only time I finally got through to a representative, all he wanted to know was, when are you going to clear your arrears? He did concede that the arrears exactly matched the credit they returned to me... I would not recommend them to anyone. I want to switch but can't while I owe money I haven't got right now. The moment the account is clear, if and when they sort out this logging in nonsense so I can make payments, I will be gone. I've already chanted my shop supply to someone else without a hint of problem.