Financed the wrong model and knew about it

October 2016 I bought a Ford Focus 2.0 Ecoboost ST3 from a dealer in Vanderbijlpark. The vehicle broke down after 2 weeks, I notified the dealer and MFC but nothing was done. The vehicle was standing till end of January 2017 after I spend a couple of thousands. During December 2016 I relised that the car was an ST1 and not an ST3 as stated on the contract. I contacted MFC and the dealer, but nothing was done. After a while the one dealer stated that they will pay the money to MFC but it was never done. Till today this has not been sorted out, this is according to me breach of contract.