I was quite happy with Bulb until they started using me like a bank.
My account is over £200 in credit and my usage is averaging at around £30/month - but they insist on "increasing" my payments from £40 to £47 a month.
This is happening to most of their customers apparently.
They are effectively borrowing money from their customers at 0% APR!!!!!
I have contacted Bulb about it but have not had a reply.