Various issues with them in the 2 and a half years I have been a customer but since January this year when I had to chose a new tariff it has been a total nightmare. I repeatedly requested information and help to chose a new tariff because I was on a three reading meter system -day, night and heat rates- and I could not get help or advice. I ended up on a tariff that was going to be 46% higher than what I had been paying. I decided I had had enough and I wanted to switch suppliers. To do this I had to request my meter to be changed to a standard meter that other suppliers were willing to take over and I had to change my heating system. It taken me nearly 4 months to actually get to the point of almost being free from Scottish Power because of the nightmare of getting the meters changed with three cancelled appointments and then the total mishandling of my account. I've lost count of the number of phone calls i've had to make. One or two advisors tried to be helpful but generally what ever I was told on the phone just didn't happen. You can wait for hours for a call back or be on hold for hours so the customer service advisor in the Glasgow office who twice has pretended she cannot hear me and terminated the call is nothing short of a disgrace. You can hear her laughing at you and she is careful not to give her name when she answers the call. Absolutely dreadful company.