Is this data theft?

<p>I have been a MTN client since mobile technology inception. Over the past few years, I have built up a credit Rand balance of about R800. I am a pensioner, and this is an emergency balance. I renewed my contract last year and was assured that my Rand amount was secure.</p> <p>Suddenly at the start of this year, an amount of R600 was removed from my balance. After weeks of trying to get a response, I was arbitrarily informed that I have "forfeited" the balance and that I had been informed that I could not longer carry the balance.</p> <p>I was not informed that money value was to be removed from me. </p> <p>Since when can a company just remove a value which I have paid for, just be taken by them? Is this not a form of theft?</p> <p>I completelying understand a rule changing from a date going forward, but to take from a customer account, I find shameful and immoral.</p> <p>MTN, I think your action is appalling. </p> <p> </p>