MTN *****ing our money

After taking out 2 contracts for two kids for their schooling and studies, everything went well until such time that my son ran out of data and the only way we could add a data bundle was too increase his cell limit from R0.00 to R100 which we did as advised by the MTN Agent. Since this, both my sons kept complaining that their lines get locked even without doing anything. After a few calls to your Call Centre and no assistance offered, I then opt to visit an MTN store. While there a Consultant advised that both numbers are being billed for Content Services. I then advise that this is not possible as this was never subscribed too and this numbers have been with MTN for more than a year already and prior to that on Vodacom for many years as this was their first ever cellphone numbers. The Consultant just shrugs her shoulders and says that I must take it up with the MTN Head Office as he Manager is busy on another call. All this while the Manager was sitting next to me talking to his friends on the phone that he is supplying the ice and cooler boxes and they will only get the code to his gate if they bring 6 pack beers and alcohol bottles to drink. Yes that is correct, he was arranging his personal party while customers are sitting and waiting to be assisted and even told to rather call the Head Office as the Manager is busy, Like really now. I have since done my own investigation and discovered that since the limit was increased, these underhanded billing tickets occurred which is quite alarming. How many other customers are not suffering the same fate. This is unacceptable MTN and I request a full refund on this.