Hp — regarding mismatch of ram serial number

Address:	Bokaro, Jharkhand, 829301
Website:	www8.hp.com/in/en

My name is ankit raj & my no. [protected]. As per the company recrd my details is name : prabhat mishra, mob : [protected].
I made a complaint to the i. E. My laptop is nt working in month of january, jst after 20 days of purchasing. Their engineer came inspected the laptop. They said that its mother board is damage so they replaced it bt then also my laptop dont started. So he said that ram is also damaged. He told that he will come next and repalce the ram. And the he took the snap of the ram. Bt next time he came he told me that the serial number of the is nt listed in companies record. So he cant cahnge the ram. I have to pay the amount for the ram. Then he will change it. I made complaint with company many time. Bt all the they repetead the same. Still my laptop is nt serviced it is kept. Kindly help me regarding this.