Nissan — service of nissan micra

i had give my micra car for service with extended warrenty and the dealer which is verst dealer in kerala state called evm kalamassery has rejected my claim for lower arm in both sides which is making heavy noise while we drive they aske me to pay 4000 rs which since i have recommeneded nissan vehicle to lot of people and now i repel for that, now i understand why nissan vehicles is not selling thier car than other vehicles