Earlier this year I had a new digital electricity meter/timer installed by Scottish Power.

The analogue one was never showing the correct time because of the many power cuts in the area. I had contacted Scottish Power several times to query how this would affect my Economy 7 charges for the storage heaters. These are controlled by a timer which should only be on between midnight and 7am. I was told that I should not adjust the timer as I would still be charged at the Economy 7 rate regardless of the time shown on the clock.

When I found Economy 7 daytime charges on my bills I had the new meter/timer installed and raised a complaint requesting a refund for the extra 10p per unit in the unit price. After complaining over a six-month period, I am no nearer a conclusion.

In addition, I gave my meter readings four months ago. It was found that the new meter wasn’t recorded on Scottish Power’s billing system. Last week, when I gave current readings, it still wasn’t. I was promised a call back within 48 hours but this hasn’t happened.

LW, Cheshire

I understand you had not been paying higher unit prices as your storage heaters are wired to operate only when the right rate is in operation.