Gross Mismanagement between SSD And MTN

I am writing to escalate a matter that has been ongoing for over two months without resolution. Despite repeated engagements, I am once again faced with an unauthorized deduction of R1,346.00 from my account for an account that was fully settled in 2024. This situation is unacceptable and reflects gross mismanagement and a lack of accountability between MTN and SSD. I require immediate clarity on who will take responsibility for this error and the associated inconvenience.