Bad Business Practice

I am actually upset with the level treatment I received from the Audi Bloemfontein Dealership. In March 2022 I bought a Audi A3 TSI at the branch and was one provided with terrible service from me not receiving my car registration documents on time and having to drive with expired permits. 3 months into my purchase the car started peeling and I was never advised that this car was in a car accident or had any paint job by the dealership. I notified the sales person Vincent and he ignored me after I logged a complaint with the bank and Audi SA Jean who is the manager contacted me. He requested that I get 3 quotes and they will fix my car. I went to 3 auto bodies mind you using my work time and petrol because auto bodies only open weekdays. The auto bodies wanted 250 or 450 to generate quotations for me which I relayed to Jean and he advised that he was ok with one quote from the one Auto body. So I paid 250 which has still not been refunded to me and got a quote. The quote was then send to Jean and he read understood what was to be done to the car at no point did he question the quotation. He accepted the quote and booked my car in. Yesterday my car was dropped off at the auto body shop where the driver from their branch brought me the courtesy car which mind you was wrong not what I had requested. The gentlemen his name is Xolani was showed the other chips that where starting on the car. This morning I call the auto body only to find out that Jean instructed the auto body to not do certain jobs as per the quote he accepted. This was done behind my back and I had no knowledge of this. Now he is going back on his word and not wanting to honor his agreement. He is now giving me attitude telling me that this is a used car and he cant be held liable. They failed to do their due diligence when the car was bought from the previous owner. I am paying for this car monthly without fail and I don't appreciate how this matter is being handled.