[Resolved]  Acer / Laptop — damage during repair at the customer service center chandigarh

Hello
I am a user of acer laptop. I bought it 11 months ago. within 6 months it's speakers started creating trouble. I approached the service center chandigarh and got it repaired. later on I found the LCD screen a little loose but could not establish the fault myself.
once again I appproached the center for some other fault I was told that The screws holding the LCD were broken and the fault lied on us. But we din't get it repaired anywhere else instead of the service center chandigarh.
Now they are refusing for the repair of same.
I mailed my complaint twice to acer's mail id but there is no reply till now.
what to do now. I don't understand.
kindly help me in this matter.

Thanks
Davinder Singh