Toyota — manufacturing defect in vehicle

Address:

Jabalpur, Madhya Pradesh, 482002

Just 1 year back i purchase vehicle innova crysta from toyota showroom suffers alot as rotor of vehicle is not working properly... So company replace it by new rotor. Second
Big problem i suffer that vehicle stops suddenly while driving and then company bring tears in my eyes in such away that they are unable to find mistake and rectify it till 20 to 21 days, in that duration i have to suffer lots of difficulties in travelling. Being a doctor i have to manange emergency stuations as well, but as vehicle is not there... I had to do by taxi which is too costly. My question is — by investing 23 lakhs approx why i have to suffer alot?