Lenovo — Service not providing

Address:

Jorhat, Assam

My lenovo Y510 (YB[protected] is dead for a week, And no service is providing from the lenovo service provider.After two days an Engineer from lenovo has visited my site to check the laptop, He said my motherboard, battery and one more parts has to be replace.Its been two weeks they are not sending the parts..When I called them they says within two days we are going to send the product.They are just postpond it, , , This is the worst serviices I have ever seen.. Plese help me...