Data usage

I recently went to do my upgrade at MTN ottery hyper market. The sales consultant (Shameem Ramjee) assisted me superbly with all documents and devices. As of recent (17 February 2015) i have not been able to utilize the remainder of my data that is stipulated when checking my balances. I have a remainder of +-700mb to use. <br> <br> I have spoken to the consultant who has spoken to the MTN support (Vuyi Zikhali) who advised that they would investigate. They advised that this is \smartphone data"which can only be used with the Opera Mini app(ABSOLUTELY RIDICULOUS). They then continue their investigation and advise that my data has been depleted. <br> <br> This is where stupidity comes in. How can you tell the customer that their data has been deleted"