Scottish Power have been trying to back bill us £2,000 for two years electricity despite having been paying them by direct debit £60 per month, for all that time, in a one bedroom flat. They go from insisting we need to pay, to apologizing for the mistake, to insisting we need to pay again. They have reset our account twice and at one point refunded our account to +£1,000 only to change it back to -£2,000 a few days later. They never respond to emails and when you phone up to speak to someone they say they'll look into it and never call back. This has been going on for months. It is a shambles and we don't know how to get away from them because they don't respond.