Lenovo — Lenovo k4 note smartphone issue

Address:	Mysore, Karnataka, 570009
Website:	Lenovo

Name: kailash va
Mob no. [protected]
Alt mob no. [protected]
City: mysore
Imei no. [protected]
Model: lenovo vibe k4 note

Dear sir/madam

On 11th on may i have puchased lenovo k4 note on amazon.in for sum of 12k. Phone was till day before yesterday. Suddenly phone started restarting and erased all of my data and erased all imei no. I am not use any sim on my phone every time it started showing invalid imei and wifi is not working. Still again and again every half and hour phone gets restarted. Regarding this issue i called up to lenovo customer care they suggested me to visit service. Has they said i visited service and said my issue. But now they are saying that they will try for android update which they will charge 300/-. If its not possible they need to change motherboard and i need to pay 80% amount of my phone for that. My question is why should i have to pay amount if my phone is on under warranty. The issue which occur its not my problem its lenovo fault. Please i am kindly requesting you to repair my phone under warranty or replace my phone to new phone or return my 85% of my amount. If its not possible non above this i am going to know consumer court to complaint against you...

Hoping for positive answer

Thank you