After four months my Lenovo laptop touch screen decided not to work and some black patches appears on screen instead of white. I contacted Lenovo support and booked a service. After 10 days, the unit returned from service in same condition less the charger. I called the center and spoke with a person explaining what happened. after one week with no contact from them I called again and spoke with another person which promised to escalate the issue. I organised a call back from them, they called but let the phone to ring just once. Another week later I have no reply or contact from them. I am now stuck with a laptop I cannot charge and does not work the way it should.This is very appalling service.