HP India — hp probook 440 g2 not working.

Address:

Gurgaon, Haryana, 122001

I am abhishek kumar, student of manipal group.
I registered a complaient on 18th june 2018 regarding my laptop.
The complain number is [protected].
My laptop serial number is cnd5346jw8 and it still in warranty.
I was receiveing a error message on my laptop.
I have called the hp support many times, but they are doing nothing.
I have also called the hp technician distributor amit kumar phno-[protected]
But they are not giving any response.
The technician was scheduled to visit on 25th june, but did not came.
Today is 26th june and i am getting no response from anyone.
I will complain regarding this to the manipal authorities.
If a serious action is not taken against this.
Please solve my problem asap.