Unexpected Cellphone bill Shock

<p>I Have a cellphone contrac with MTN for a long time now with the number ********** 843 for 1 Gig data. My Bill has been a constant amount throughout the years. My shock came when in April i received a bill for more than R7000. I called in to customer care to find out what was going on, i was told about out of bundle data charges and was informed of how to avoid such shocks. I suckedit up and paid my bill with a mutual understanding from my SP. I decided to stop using the number in and just for when i needed to make calls when i had to, that was when i used it. To date, i just use my cellphone for calls only but i almost had a heart attack when my May and June Bill amounted to more than R18000. HOW IS THIS POSSIBLE?Considering i dont use this line for nothing more than calls. Why am i being ******ed by MTN for an aggressively high bill. My question is for what? Data that i had not used? This is ridiculous, i know i used the data back in march and paid what was due, now this resurfaces again without warning. I called customer care again to dispute this and was told that they will log a ticket for me with their backoffice for investigation but when the resolution came back they send me a lot of documents with figures and web addresses they of which i have no idea where they got them and said i was liable for the charges on my account. I really am not happy with MTN and how they have been treating me lately. For many years why dontthey check my records and see how loyal of a customer i have been and ask them selves what happened recentlt because my account seems to have been manipulated and i am at the receiving end of it all. Please fix this MTN as i am hereby at you mercy </p>