Flipkart — Mobile automatically getting turned off

Address:

Hyderabad, Andhra Pradesh

I have purchased the mobile Moto E on Fri, 23rd May'14. There were no issues at starting stage but after 5 months started facing issues like " Automatically its getting turned off " ..." call drops" ..." battery backup is low" . Till it is under the flipkart return policy it was totally good. But now after using the mobile for 5 months the flipkart is also not ready to replace the handset as it crossed the '1 Month return policy" by flipkart. So now what to do further.