Complaint

I have issued a letter of complaint for the past 8 months relating to a car that I bought from solo finance and I was financed by RCS auto, I have made numerous calls to them relating to the vehicle not being up to standard and they have always said that they will get back to me and they forward this complaint to the manager. Till today nothing has been fixed and the car is not even running properly. I have decided to dispute the installment of the vehicle and now they sending me letters of breach of contract. I as the consumer wanted to know know how could they approve finance for a vehicle that was not up to standard and as the legislation of MIOSA a vehicle that has not completed 6 months of satisfaction to the client needs to be replaced for looked at by both parties_ I am disappointed that now my credit record is bad because of something that could have been fixed a while ago. I have tried taking legal advice and still my mater hasn't been resolved