Hp — my laptop is not working

dear sir/ma'am,

I had purchased my hp laptop nb pc pavilion envy 14.-3012TU
BATCH : 5C02128TWP, from m/s gadgets and gizmos[protected]nd floor great india place , noida
invoice no G&G/12-13/03-482 ON 20- Aug - 2012

for Rs: 99,999.00

now i am facing prob in this laptop. They had promoted its unique feature of "beats speaker" and they are not working no sound is coming even the ear-plug socket is not working. The sound output is 0.
Appart from that there USB port is not working as well. it was a gift from my friend Vipul Shrivastav. I was travelling so i got my laptop on april 2013, since then i am facing this problem. i submitted my laptop in h.p service center called :

AFORESERVE.COM LTD in D block , surajdeep complex, 16rana pratab marg, lucknow 226001. (U.P)
on 27/5/2013
COMPLAINT NO:2554
and so far i have not received a positive response they claimed that my work will be done in two days and when they called me to collect my laptop it was still in the same condition as i left it. They said that USB port is not available in there store so this work can't be done but your speakers are working fine i asked them to give me a demo of my speakers and the speakers were still not working they said that they will install the drivers n give me in 15 min i kept waiting for 30 min and there was no result. then they asked me to come the next day. Next day before going i called them up they said mother board needs to be replaced, but my laptop is still under warranty and i don't want them to repair my laptop i want them to replace it now. because they have wasted, my time my laptop is still with them.
I keep travelling so i don't have time to get it repaired and i have to leave Lucknow on 3rd of june for delhi and from there on 6th i am going to Australia for my higher education. please help me. i am graphic designer and my course requirement is of laptop i cant work without it. i will be really obliged if you can help.

Thank you.
Barira Hasan
ph# +91 [protected]