Acer Lcd Monitor — refused to register complaint

My son Ateeq ur Rehman purchased acer LCD monitor but it is not working now the customer care service is not cooperating to register even the complaint.The detail of the complaint by my son to the customer care is given below.
Dear Sir,
I Ateeq Ur Rehman, purchase Acer LCD Monitor Model No- AL 2017 A having Serial Number : ETL[protected] ON 6TH of Sept 2007.
But Now I faced problem, when I turn on the monitor, The monitor screen get Translucent. And it take time to response there action, Even I didn’t see the cursor. It’s impossible to work on it.
I tried to log complaint at your customer care but your representative doesn't log my complaint . And he say something like that my serial number does not match with the Acer data bank. And he clearly denied to log any complaint,
I also try to log complaint through mail, but the same reply that my serial number does match.
I also talk with your representative Mr Arun Singhal ([protected]), but he reply in a very funny way , “he says that’s it’s my problem, Why My serial number doesn’t match , It shows that I buy a monitor in a grey market.
I can’t understand that’s my problem or yours, I have a bill also, and one more thing the same monitor also register at your website.
So please understand my problem and resolve my problem..

Regards
Ateeq Ur Rehman
[protected]
Now through your forum I request the authorities to listen.It is also to be noted that the product had been registered at the website of the company when it was purchased.
Thanks
Habib ur rehman
511,Main Road, Jafarabad,Delhi-110053
[protected]