Ford South Africa, Ford ladysmith and absa poor service

Last year july they sold for us eco sport with lot of problems.we reported it same day they promised us to change it but they failed to keep their promises we returned the car even before they the first installment commencement they saw all the problems that were valid till today they dont want to cancel the account and the car is still with them since October last year im unable to buy a car becouse of them now the bank has put me under debt review becouse them i communicated with the bank and Ford South Africa within seven i told them everything but till today they are failing me