Lenovo — Within a week its display stopped working

Address:

560037

i brought your lenovo phone A-7000 on 28th august 2015 from belgavi and i found sum issew in phone about touch screen after 15 days. i gave it to your service center' wintech services belgavi' they give 10 days to repair.. i got my phone after some days..but again found same probleme after 15 days..my touchscreenis not working properly... i again gave my phone to your otharised service center 'wintech services belgav', but this time they say we need confermation from company to replace part or repair my phone. so please gave confermation to them to solve my phone probleme... i tried a lot to conect to your tool free no..but i get nothing responce... my IMIE 1 NO IS [protected] & IMIE 2 NO [protected] S/N: HA0DUFH5 why should I suffer for almost 4 month when there is a manufacturing defect in the phone. Please help me on this matter.