Lenovo — K3 note touch screen problem

Address:	Bharuch, Gujarat, 392001
Website:	Www.consumercomplants.in

Some touch points on Right hand side are not working.
Message keys like back, p, l
After dialling a call then for extention call when press -point 3.it will not work
Theses points are less sensitive.
Customer care at Bharuch is not ready to attend and understand this problem.
My phone is under warranty.
How can I suggest to anybody for Lenovo.
Roopesh