I AM USING AIRTEL POSTPAID SIM No.9970399313 FROM LAST TWO YEARS.BEFORE FEW DAYS THEY DEMANDED DOCUMENTS REGARDING THE SIM TO RECHECK.AND I HAVE SEND THAT DOCUMENTS IMMIDIATLY.BUT AFTER THAT MY SIM WAS NOT ACTIVATED.I HAVE ALREADY CONTACT THEM FOR MANY TIMES.BUT THEY ARE NOT RESPONDING ME.AND STILL MY SIM IS NOT ACTIVATED.BECAUSE OF THIS I HAVE FACE LOT OF PROBLEMS.AS EVERYBODY KNOWS THE IMPORTANCE OF MOBILE.