Dell — DELL XPS 12 having lots of problem

Address: New Delhi, Delhi

I purchased dell laptop, XPS12 model (ULTRA BOOK) on 21/03/2013 from dell with 3 years Accidental Damage Protection warranty.
After purchase of 3 months (in Jun 2013), I started facing problems in laptop.
Problem was:
(1) System hangs some times when making shutdown or restart. It cannot be rebooted or shutdown or cannot do any work until the battery of the laptop fully discharged. If the laptop was fully charged and the problem occurs, then it takes 10-12 hours waiting period to work again on the laptop.
(2) Touch pad is not working properly.
(3) Keyboard some time does not work.
I reported the problems to dell team, they provided several telephonic solutions and deputed engineers two times to solve the problem but they were unable to solve the problems in the system. They had passed 7 months and problem is still coming. They are also offering me Inspiron machine as a replacement which is having very less functionalities, features and configurations. They are not giving me the same laptop (XPS 12) for replacement