MTN and data expiry

For the most part I am happy with MTN, however, I find it horrific that you (MTN) can feel justified in charging your clients an exorbitant rate for data and then proceed to cause it to expire after a month irrespective of how much is still left. Data is an intangible commodity with the benefit of longevity and has no reason to “expire” once paid for. It’s disgusting that service providers such as MTN can charge so much and then cause what you have left after a month to disappear. You, MTN and all other providers with the same policy, are clearly using this clause as a means to take more money and provide less. Be better MTN.