Appalling service, far too slow getting the charge master installed, unclear instructions for exactly what they wanted photographed leading to delays in setting a survey date. Then further delays in setting an installation date. It was booked for a Friday for a day and half installation so the half day was a week later. Then told we needed an isolation switch in the mains box. When we queried this as the surveyor had said we did not need to get one.Tthey insisted we did need one -so had it installed on a Saturday (cost £210) then told that we did not need it as the man who came to do the work had the correct one to install in a different place. A complete farce from start to finish. How they have the government contract beats me - total ineptitude. I will be complaining!!!