IVE ACULATED 9 YRSNCB THEN I GOT AMOTABILITY CAR,FOR 3 YRS.IVE GOT A NEW CAR BUT HAVE BEEN TOLD IVENCB .?

ID LIKE TO FIND OUT IF ITS RIGHT FOR ME TO LOOSE MY NCB OF 9 YRS WHILE I WAS DRIVING A MOTABILITY CAR.INSURANCE COMPANYS ARE TELLING ME SO.ALTHOUGH MOTABILITY HAVE GIVEN ME PROOF THAT IVE HAD NO CLAIMS OR ACCIDENTS.HOPE YOU CAN HELP.THANKS PAT GUSTAVE