YOU CANNOT COME TO QATAR UNTIL THE CURRENT VISA ISSUED (EVEN NOT STAMPED IN UR PP) IS NOT EXPIRED. IT USUALLY EXPIRES 6 MONTHS FROM THE DATE OF ISSUE IF THE VISA HOLDER DOES NOT ENTER TO QATAR.

I HAVE UNDERGONE SIMILAR SITUATION BUT DIFFERENCE WAS THE VISA ISSUED WAS WORK VISIT. I EASLY CAME TO QATAR AND RETURNED BACK AND CAME TO ANOTHER SPONSOR