Hp — WIFI and Bluetooth is not working since I had buyed and I am not getting any response from them.

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HP

ON January 2014 I had buyed this Laptop and from that time my WIFI and Bluetooth is not working although Modem is also not working properly.I am in a WIFI campus but I am not able to use it. 1.In this Time Frame of 18 Months I dont know how many times I had visited Service Centre. 2.Full recovery of my System was already done but the same issue arrised after 7 days In recovery my 2 days was wasted and my IMPORTANT DATA was lost. 3.Two times my all the Applications was lost in RESET as recommended by the Engineer yet I am facing problem in getting the application and I had Again downloaded by using my Data charges. 4.Three Times ENGINEER visited my home and tried each and every aspect but he was not able to solve it Each of your Engineer had wasted my 3-4 Office Hours . 5.Three times my WIFI card was changed but yet the problem is not solved. 6.From 18 Months I am in a Mental pressure because of that Laptop.