Coolpad — My phone is under warranty and given for service on 4th may but didn't got any help from company. No repairing no refund no help

Address:	Thane, Maharashtra, 401107
Website:	Www.coolpadindia.com

My phone is under warranty when motherboard got corrupted so i have given it for repair but till today 30/8/16 didn't received our phone back. Whenever we call email we didn't receive they nighther receive phone nor on email. So we want refund from the company or replacement of new phone

Below are details
Purchase 12/7/15
Under service from 4/7/16