Samsung not providing assistance

Samsung, my son bought a Samsung Television through FNB. The TV had a problem with it's screen and as it was still under guarantee he contacted your service centre. They advised him to send the TV to MNS in Newton Park Port Elizabeth. That was two weeks ago! MNS does not return any calls made to them and when my son manages to speak to them they say that they cannot work on the TV as Samsung does not allow them to do this as the TV does not register on the system. How can this be as Samsung Service Centre is the ones that advised my son to send the TV to MNS? We have the courier proof of delivery date and the job number for the set but nothing is being done to help my son. He has run up a huge telephone account due to his struggles with this matter and the TV warranty has since lapsed. He is desperate and upset as he cannot afford a new set or even afford to have it fixed and you Samsung and the company MNS are doing nothing to assist him. I believe this is totally unacceptable that this could be your customer ethics