FORD ENGINE PROBLEM AND GIVING ME WEIRD SOUNDS-NOT A SAFE CAR AT ALL.

Hi, I bought my car 2 years ago at Eagle Ford brand new (ford fiesta eco-boost candy blue) and after driving the car for 2 years with less than 65 000 km the car always give me an engine problem. I took it in for testing for more than 3 times and it still gives me the same problem,i am so frustrated because i drove to KZN and the car sometimes goes off and gives me weird sounds i am really not feeling like I'm safe anymore with the car.

I really don't want the car anymore,Ford please help because i really don't feel safe anymore..and this has really inconvenienced my life that now i have to hire a car when i have a car.