Worst Service/Faulty car

I bought my fiat 500X in march 2016,brand new paid cash for the car, In June 2016 the car wouldnt start,then Fiat came to fetch and sort out the problem,in August 2016 the same thing happened,then again in September 2016, I spoke to Bradley at the dealership about taking the car back but he insisted that they have now detected the problem and the car shouldnt be a problem,I told him they only say that the car is fixed just so they can buy time and that I run out of reason to have them take the car back,with that being said I reckoned the car issues has been sorted. and I love the car. Come October 2017 the car just died completely and fiat took the car in for a month,I get my car back first I have a meeting with DP because I felt harrased to bring the courtesy car back since i told them I dont want the 500X car since it has so many malfunctions.The DP then tells me to either trade in my car or go to the motor ombudsman because they wont take the car back. a week after i get my car back the cruise control of the car doesnt work,i called the dealership and they told me to take the car to the nearest dealer but if anything goes wrong they wont touch the car or better yet I best take the car to Fiat South Africa ,i am still here the Cruise control doesnt work ,i have been calling Fiat SA back and forth with no answers The dealership is not keen on taking my car,Fiat SA doesnt take any cars.It is very clear that this car was faulty from the get go,but Fiat and the dealership refuse to take responsibility for the faulty car.