Yu Televentures — not booting up

Address:

Kottayam, Kerala, 686008

My yureka plus is not booting up. It shows only the booting logo.
When i change the battery it boots up, but after a few days it turns to the old condition again and again. I have already changed battery for three times. When i went to customer care they didn't do anything pls do reply as much as possible. And do something for me. I was very happy with yu. But now a days the complaint raised above makes me unhappy. Pls do some thing as soon as faster.