Good afternoon guys When I moved into my property it had prepaid meters fitted, after a year I had them swapped over for standard meters. I was with E-on at the time and now im with Scottish power. This morning E-on sent me a nice letter saying that I owed them almost £600 for the years 2014 to 2015 as the meters weren't calibrated properly and that was my responsibility? How can you get in debt with a prepaid meter and why has it taken them over 3 years to contact me? The letter stated that they had also sold the debt on to another company in may this year. I'm totally confused by this Can anyone throw any light onto the situation?