Lenovo — lenovo k8 note mobile is continuously restarting

Address:

D1302, Mantra moments, Borhadewadi, Moshi-dehu road, Moshi, Pimpri chinchwad, Pune, Maharashtra, 412105

Hi,

I am facing issue that my lenovo k8 note mobile is contnuosly restarting.
I have tried to start mobile i safe mode also reset mobile but still issue didn't resolve then i have visited to lenovo service centre.
When i went there i came to know most of the lenovo k8 note user facing same issue.
Still i asked them to check my mobile.
They said that will update the software if mobile works then its fine and chances to mobile work after software update are very low
Still i asked them to update
After update they said that still issue not resolve you have to change the mother board of the mobile.

My concern is this that if the every lenovo k8 note user have same issue then they have to take action on that because it is there falt not us and they are simply asking money for mother board change

Please look into this