Samsung — Company violating Warranty bond

Address:

Chandrapur, Maharashtra

My mobile samsung Grand neo plus is under Warranty. It has some defects and i submitted mobile 3 times in service centre for same issue in near about one month, but same problem continues those people promised me to return money or replacement but now 13 days gone from again submitting the mobile but they are not responding properly. Now that mobile is of no use and only 4 months passed after purchase so I want my money back or replacement.