Email samsung asia. Attach phone images, box images showing IMEI, phone images showing IMEI both on screen and on back. Warrenty card and explain the whole situation that your dealers here are not helping.
Send the same email to Samsung Pakistan as-well.
The third thing to be done is to get contact of Manager Customer Relations and get in touch with him. Instead of selling it, try doing this.
I once purchased a new Nokia 6630 back int he days. It had a faulty screen and Teletec said they will not cover it. I did the same and got a replacement mobile. If you make a little effort, you may get a positive result.
BTW, you can try flashing the software to see if it is software issue or hardware failure. Looks like hardware problem from the image.