My car is still not fixed.

I bought Toyota Fortuner in 2016. On the 18th December 2019 my car jammed and I tried to JumpStart and unfortunately it refused to start then I subsequently phoned Toyota road assistance to toy the car to the nearest car dealer in Pretoria north. upon inspection I was told that the car had blown the computer box which had to be ordered from China and it later delivered to the car dealer on the 27th Jan. today service Manger by the name of Raymond van Rooyen told us that this car has got multiple problems and Toyota warranty is not going to cover any cost and that we should seek insurance intervention. We feel like Toyota is throwing us like a can on the road and the responsibility of fixing the car should rest squarely on our shoulders. Please help us to resolve this matter as urgent as you can.