Warranty is empty promises

My Hyundai is 2 years old. When u buy a new Hyundai you are being told about a 7 year warranty. My car's injectors is broken. Nobody from Hyundai answers their phones. From the salesperson at Hyundai Secunda to the Customer care, nobody. And my injectors broke after Hyundai Nelspruit told me there is nothing wrong with my car.