Imperial Toyota Randburg's RAW deal

Imperial Toyota Randburg sold me a 2017 used Toyota Corolla Quest with 20 000 kilos which was involved in an accident without informing me about the repairs. I had problems with this Toyota from leaving the dealership's floor. I proved beyond a shadow of a doubt that this was a accident damaged vehicle and demanded cancellation of the transaction. I even tried through the Dealer Principal - Toyota head office - social media and nobody seem to attend to my issue. I have 10 Toyota Corolla Quest on Uber and this was suppose to be the 11th. I daily loose income because of this incident.