Overcharging , Bill incorrectly

<p>I have been overcharged for the month of July 2016, I have topup service but told I used internet where my data/airtime is finished.I dont recall asking MTN to activate such, when I have ran out of data I recharge myself.Ref:RE ********** 0 The reason i choose topup package its because could not afford more than what I choose.</p> <p>I need mtn to reverse their charge of R842.55 because i did not request for them to have open line.</p> <p> </p> <p>I have found out from 5 of mycoleeagues as well same thing has happened where they are overcharged and have not requested for the service.mtn is making money out of people lately</p>