If you get a higher bill than you would expect from SSE then check carefully the calculation. In my case they are charging me nearly 3 times than they should. I am afraid that 'error' might be happening to thousands more. In my case I have provided SSE with gas meter readings in metric units but their automated calculation is considering that my readings are in Imperial units. Therefore prior to converting the reading to kWh they convert my reading from imperial to metric units by multiplying it with 2.83. If your gas reader is metric (m3) this conversation is not required. I have contacted SSE to explain them this issue several times (lost counting) and have also filled a formal complaint and discussed this with supposedly SSE specialists without any success in resolving it. The people I have spoken to are not truly competent and are not able to understand or resolve this issue. Their stance is that the automated system is right and this is how everyone is billed therefore I am wrong. They are not able to explain why the calculation is converting metric units (supposedly imperial) in metric units. This story is going on three months now and still is not resolved. I have spoken more than 10 times and wrote emails to head of customer services and did formally complaint but no luck. They are responding to my complaints even though it takes days and hours to wait in calls but they are not doing anything about it and they keep on passing this to other specialists and other specialists to discuss. I have enough evidence now to go to the ombudsman hoping that they can help me resolve my dispute with SSE. This is a terrible company! Try to avoid them at any cost and if you have bills with them make sure you understand the way you are charged and make sure this is right!