Thanks Jayden,but it is not the air con or the hot water. I have been keeping track of meter readings and when I am using these things and they use hardly any power. I do believe that you will need to send out a technician to replace the metre, as When everything is switch off, the metre is still running. The other option and I really hope not, is that someone else is using my power as the property was vacant for over 12 months before I purchased it. I will not be happy with anything less, as cl ...