My account with Scottish power showed that my DD with them needed to rise to clear the balance when it came to the annual review. Fair enough to a problem to raise to clear the debt. However they put it up so that I would be in credit at the next review by £122 not just enough to break even! I went on the website and there is a graphical slider on the about of the DD and it allowed me to drag the DD down by £10 per month so that I would have a zero balance in a years time.
Do they think we are stupid FFS