Poor customer service (Car breakdown.)

My car was picked up from my home due to suspension issues and I was told that the car will be sent Midrand and I even asked the reason the car was sent to Midrand i was told that they have the workshop they use. They kept on telling that they will give me update but I was the one who kept on calling the. The after a month I was told that the car is deemed uneconomical to repair and it would cost R73 000 to fix the suspension. How can the car cost R73 000 for suspension only not the engine can cost that much. This is my second car with similar and I was told that the contract will be canceled. I have spent a lot of money to maintain the car and you guys want to cancel my contract, unfortunately I won't accept. You guys you must get me another car because I'm not willing to cancel any contract with you, you guys must get me the car so that I can continue with rental.