Held to ransom with Billing Charges

<p>I have a package costing R379 a month, and have been having that amount ( within +R50) range deducted from my bank account every month for about 11 months since may 2015. Suddenly in May 2016 I was billed R3126.60 , then end Oct R1969,72 and end Nov R1652.30.</p> <p>In spite of me contacting MTN at the beginning of Nov and making a total of 5 calls during the month, I have received reference numbers and assurances that someone will call me back, to no avail. I was once told that I never set a billing limit amount, so therefore they can charge me anything over and above my R379 a month if I have used more data or made more calls. Then on another occassion I was told that I HAD SET a monthly limit of R1587.74, which firstly is a very odd amount, and secondly I have never done. I was once told that a supervisor had checked into my account, and I would just have to pay the amount as it was correct. I do regular top ups of data myself thru Standard Bank and yet somehow they are billing me huge amounts at MTN. NO I CANNOT ACCEPT THIS! and asked to speak to someone, but still no one has called me back. </p> <p>I then said if I am responsible for setting a monthly limit(( over and above my package covered by my R379 which I signed up for), then I would like my limit set to ZERO. Oh no, then I was told that this would only be possible when I spoke to the suprevisor, whom I a still waiting to call me back. </p> <p>This is just **************** and I want to cancel the debit order at my bank as I have no control on what they take from me!! </p>