miselling

i bought a car a white toyota yaris 2013 model but it was less than 15000 kilos around 2013 september at mcarthy toyota gezina.then after ayear later the car started to show a sign of airback then atake it straight to them and they check the car and told me about adefect airback ,as if it was involed in an accident,but i told them i bought it like that to them,but they fixed the problem.then now again i am having another problem on the vehicle the shoks and suspetion is damaged also the cost to fixed it is 21000 thousand is seems like i bought a vehicle which was involed on an accident but they never told me about it i just found it out now about it,is being 2years with the vihicle.