***** dealership which sells accident damaged cars

I bought a Range Rover in this dealership on the 26th of March and it broke down before I even get home and had to tow it home and called the mechanic who assessed the car and told me it an accident damaged car I bought and it has a lots of issues and when it rains the water come inside the car and I called Portia and asked her that I would like to return the car or if they can buy a car from me, she ignored me the whole day as she said she will speak to her bosses and today she tells me the bosses can't either buy the car back or refund me. I am now stuck with an accident damaged car which was sold me as second hand and with lies of being a good car and never been in an accident. All I want is my money back because the dealer really ****** me and now if their car is good why can't they take it back. I am so frustrated of these guys and their Portia who is not good in helping customers after sales sucks.