Lenovo — lenovo ideapad 520 worst laptop, horrible service

Address:

Nagpur, Maharashtra, 440015

I brought brand new lenovo ideapad 520. Just after unboxing i found little shock in my laptop. Also that laptop was too much slow.
When i complained, customer desk said that the small shock is acceptable as per international laws. When i insisted several times they replaced my charger and that problem was solved. Still "laptop slow problem" remains the same and thay only have answer that you can increase the ram, we are finding some speed issues in this laptop. My 4 gb brand new lenovo laptop is too much slow than my old 1 gb laptop. The product is ether faulty or my one is having manufacturing defect. But their customer care system should resolve the issue. Rather than giving excuses. Too much disappointed.