I received a county court judgement thanks to british gas for £242 in which I paid off immediately, however they then said

that I owed them a further £75 which was not true. I contacted the CAB who then spoke to british gas inwhich they said I owed nothing and apologised for saying I owed £75. They sent me a letter in post stating apologise for any inconvenience caused, and have still defaulted me stated on my credit file for £242 then £75 underneath, can I get this removed as I paid the ccj immediately for £242. many thanks