Hewlett-Packard India [HP] — Bad performance of system

Address:

Gautam Buddh Nagar, Uttar Pradesh, 201306

I am Working with Shrink Packaging System pvt ltd Greater Noida as a Design Engineer, we buy four Desktop and 2 Laptops having very good configuration as per your supplier, i7, 16GB RAM, 1TB Hard Disk, 2 GB Graphic Card, but still we are not able to work properly, System become hang again and again, even when we open a normal excel file, then we call to HP support and launched our Complaints to them my case number is [protected], your HP guy came here two times and i do not know what he did here, neither he told the problem nor he discuss any solution, we already changed window also, we are totally waste our time. This problem is from day first when we buy these system. our Company expanding Business and we are going to buy around 10 to 15 more systems, when we asked your support person we need technical discussion regarding this still we did not have any information from HP side.
So it is my request, please take it serious, we already waste a lot of valuable time, and take a necessary action as soon as possible.