MTN Unauthorized Deductions

My wife experienced several unauthorized deductions from her MTN account in the past which was delat with and eventually refunded by MTN after lengthy and exhausting efforts from our side. Recently on 27 November 2021 an unauthorized amount of R2,544.45 labelled as a "Self Service Purchase" was again deducted against her MTN account. This "purchase" was never done by her and is therefore unauthorized. We have escalated the matter to MTN Customer Care, MTN Billing, MTN ***** and MTN Complaints, but with no clear answers after more than 10 days from them yet. MTN does not assign a person to its customers to deal with complaints, only unpersonal phone numbers and unresponsive email addresses. Therefore we will now escalate the matter to ICASA and Hellopeter as well. We will also now commence to port her number to an alternative cellular service provider.