Yu Yureka — Company provide defective piece and not replied to my complain

Address:	Kutch, Gujarat
Website:	www.yuplaygod.com

My name is dharmesh. i bought yureka mobile from amazon.in in 15% cash back offer company does not provide me cash back after date has been gone when i complain they did not reply... and the phone is also defective so i call to customer care they said that our technical support team call back in 48 hours but they don't after that when i call again and again they accept my request to replace the device in that they provide me defective device and again on complain they does not reply in a good manner.