Mtn
Top up airtime

I am so disappointed with Mtn's current billing system. I am unable to use my top up airtime in order to purchase data bundles. I find it extremely unnecessary that I now have to spend more on airtime in order to purchase data bundles knowing that I have a large amount of top up airtime available. Mtn has got to change this, I am extremely annoyed that we're being ripped off like this