Brand new defective car

Hi I purchased a brand new creta from hyundai pinetown. The car has a rattle on the 3rd gear. After going to the dealership 4 times and reporting to hyundai sa I received no assistance. I reported to the ombudsman and I'm still waiting for help. I'm paying for a brand new defective car I will not purchase from this dealership again. They are not helpful. They are unable to resolve the problem neither can they replace the car they are very content to let me suffer for their issues. Disappointed customer pathetic service.