I CANNOT BELIEVE HP WILL NOT GIVE ME A NEW PC

I PHONED INTO THE GAME STORE RICHARDSBAY WHERE I BOUGHT THE PC FROM THEY TOLD ME MY WARRANTY HAD JUST EXPIRED. I PHONED HP CUSTOMER SERVICE WHO TOLD ME THE SAME. MY WARRANTY JUST EXPIRED, MY COMPUTER DOESNT HAVE A SCRATCH ON IT. IT TOOK ME 6 MONTHS TO FIX AND BECAUSE A LITTLE ***** WAS NEVER INSTALLED CORRECTLY MY WHOLE SCREEN MECHANISM IS FALLING APART. I CANNOT AFFOR TO EVEN THINK OF BUYING A NEW COMPUTER AND CANNOT BELIEVE THE BAD SERVICE I HAVE BEEN RECEIVING.