My boiler (6 months old)lost pressure on Wednesday. I have had a relative try and help me over the ozone. Since Wednesday I have left messages for 25 registered heating engineers to see if anyone can come out as we have no heating or hot water. Not one has rung me back nor answered the phone. I am stuck with what to do. Do I just keep calling people from further and further away until one answers? I am using the corgi list. Today's it's cold and we are really feeling the lack of hot water and heat.