Wrong details on contract

I purchased a Renault sander 1.4 car via imperial financed by absa I collected the car on 12/12/14 and the following day I noticed that the contract I was given said I have a 1.6 car not a 1.6 I immediately called the insurance and changed it with them and from 07/01/15 iv been asking the sales person who helped me get the car for a correct contract as im worried if it happens that if the car gets written off insurance wont pay today its 04/02/15 and im still waiting.i complained to management someone by the name of jaco swanepowl said its lot of work to change it they rather give a letter saying they are aware of the issue. After several attempts to get a correct contract today 04/02/15 I get a call from imperial saying absa says my expenses went up since I bought a car so its a bit of an issue they have taken it with absa management.im NOT HAPPY AT ALL I DEMANT the contact be fixed or they must please take their car back as I don't want to find my self paying for the car I don't even have in case I get an accident