MTN *****ing money via loopholes

Have been getting a bill of R200 per month for past 2 years for content subscription. MTN obviously making a commission on the sale so refusing to reverse or stop the charges. They advised to cancel from handset but have done that even though it shows no active subscriptions. Set limit to zero for external charges but still getting charged. As EFF member going to engage EFF to shut down head office until MTN able to stop billing and reverse funds