IF you believe your pre-payment meter is faulty, the best thing to do is contact your energy provider.
Most have a web page to explain problems with pre-payment meters and helplines to call.
If you report a problem with your gas meter between 8am and 8pm on a working day, or 9pm and 5pm on other days, your provider must send someone to repair or replace the meter within four hours.
If you report the problem outside these hours, you may have to wait longer.
If your supplier doesn't sort it out within the time and the meter is found to be faulty, it should pay you £22 compensation.