I manage my parents account using POA.
They have used far less than they were estimated owing to hot weather and a new more efficient boiler.
But bulb still takes the set amount each month.
With the previous supplier, I was able to request surplus credit to be paid into their bank account once it reached a certain figure (ie more than £50 in credit, for instance.)
Without going into the bulb website and searching for this option, does anyone know if it exists?