HOAX FOR A PROMOTION

THIS WHERE YOU BUY DATA AND THEN GET THE SAME AMOUNT OF DATA FREE THAT YOU CAN USE WITHIN 7DAYS IS A HOAX. I'VE BOUGHT MORE THEN 2GIGS ALREADY MY BALANCE SHOWS THAT I HAVE DOUBLE DATA BUT THE DATA DOESN'T LAST THE DURATION, WHEN I CHECK MY DATA USAGE ON MY PHONE IT WOULD ONLY SHOW THAT I HAVE USE THE DATA THAT I BOUGHT, BUT THE REST WOULD BE FINISHED. LIKE I BOUGHT 1GIG AT FIRST, DOWNLOADED A FEW THINGS SEEING THAT I HAVE A EXTRA GIG TO PLAY WITH, 30 MINUTES LATER MY DOWNLOADS STOPPED I CHECKED MY BALANCE DATA WAS FINISHED, CHECKED MY DATA USAGE, THEN TO MY SURPRISED I USED ONLY A GIG, NOW MY QUESTION IS WHERE IS THE OTHER GIG? THE FREE GIG? PLEASE DON'T BULL YOUR CUSTOMERS!