Customer service is rubbish. They simply will not (or are incapable of) answering simple questions, such as ' will paying by direct debit on this tariff save me money'. The irritating woman on the other side of the phone just repeated the same message (obviously reading from a screen) over and over again. In addition to the awful customer service, there entire website system for making payments is horrendously flawed. After entering the gas and electricity meter readings, the bill amount was calculated and I then paid by debit card. Two days later I get an email from then demanding payment for a higher amount. I am going to ditch Scottish Power as soon as possible and go elsewhere.