Dell — performance issue

Address:

Hyderabad, Andhra Pradesh

I have purchased dell inspiron 5537 laptop with i7 processor touch. from purchase day onwords laptop dosent give performance. After that daily am getting one by one issue and I used call to dell customer service daily. But problem was not cleared till now. And they are changed all parts in laptop except hard disk and outer casing. But still problem not solving. System working very poor speed compare to another i3 laptops. Meanwhile for name it as i7 but working i3 laptop.