Basically Tej is angry with his family - His main grievance is that his family has ill-treated Toasty and what if the same thing happens again? That is, Toasty may be thrown out on some other pretext again!
Although it looks absurd the way Tej is behaving towards Toasty when the entire family has shown repentance on their stupidity - how can he be not grateful and remorseful to some one who has done so much for him and the family!
My prediction is that - Malti is going to come back first - Chaturvedi family will bring Malti first with all respect and love. Only then Tej will be convinced that the family has now reformed and there is respect for a lady in the family!!!