PakSuzuki are thugs. It is a known fact for ages. The kind of cars they are providing speaks volume of their practices. Most of their clientele is a segment of society which does not know how to stand up for their rights and hence, they've built up their confidences to rob people, selling poorly built cars.
Kudos to you for standing up for your rights. As suggested earlier, file a proper case in consumer court against the said dealership. This will bring them down to their knees.
Last but not least, sell the car and get something reliable from reputed brands if you can. This would save you a lot of hassle.