A bill came to the house to the occupier for gas from Scottish gas for £9,700 or thereabouts for payment from 2006 to today. Why? We've been paying by direct debit since we lived here having our payments modified each year (£160 a month so not exactly underpaying). We switched recently to a fixed payment and had a final reading and we got money back from them (ie Scottish gas). Then this bill comes through saying to pay that amount before 24 feb. WTF????