MTN FAILED TO CANCEL BIS FOR OVER 2 YEARS!

When upgrading, and moving from a blackerry contract to a samsung galaxy contract for my daughter, your store failed to cancel BIS, while remembering to make me buy a 100mb monthly bundle to replace the BIS that would no longer be applicable or needed on the new Samsung Galaxy contract. Yet MTN continued to charge me for two years worth of BIS which I only became aware of when upgrading two years later.. I therefore require a swift and immediate refund on all BIS and blackberry related products that MTN has charged me for over the last two years, as MTN failed to cancel a service that was cancelled by me, a service that was never used, and a service that was charged for every month. Why would I need BIS on a Samsung? It doesn't work on Samsung. Why would I need BIS AND a 100mb bundle, same bundle sold to me by your MTN store agent. Refund me immediately please. Thank you.