Debited Several Months after Cancelation

So it has now been more than a year since I initially put in my request to cancel my MTN line. Not only has no one reached out to find out why my account has been debited for the past 5 months, but I have now escalated it to their legal team. I have still not received a response and have visited their Sandton and Morningside stores countless times.

Please can someone get back to me. I have been debited close to R2000.00 for an account I have not had since last year.