Lenovo — Battery damage

Address:

360311

I have lenovo zuk z1 smart mobile with IMEI no. [protected] and purchase date of 8th june 2016. Battery of my mobile was damaged automatically. So, i visit lenovo service center for replace, they tell me that your warranty was not acceptable for battery damaged. So, please accept my complaint and tack further step on lenovo. So i wants to replace my mobile.
Thank and regard,
Aekant ghelani
Mob no. [protected]