paying over100000 for damaged car

I wanted to buy polo vivo and the trendline was delivered plus it is damaged. Paid 10000 dep..they want 23000 from me to cancel and keep my dep of 10000. Wesbank approved me and mayy auto said i cld only get that one car..i didnt have any choice. The advertise no dep but i must pay 35000 dep.my total payment plus insurance is 3400..they know i cant afford that. No manager even called to xplain or apologise up untill this day. I want the car i app**** for.If u are reading this..dont ever do business with them.!! Wesbank..said if i am approved for a certain amount i can have any car. I went back to them the day after they delivered the car to tell them about the faults the car had ..they said i must make a list of all faults. How can i pay 3400 pm for a second hand car. They did not explain the contract to me..after my wife read it i understood what i really signed. I wanted the polo hatchback and the manager said the deposits of the other cars are too high and the bank just approved this car..the bank says otherwise...im a unhappy ..dissatisfied client..and mayy auto is forcing me to keep a car that i do not want and they are robbing me of my money.i am not the only unhappy client.