Frustrated with Telkom's WIFI Cancellation process.

For two months before relocating abroad from South Africa , we tried to close our WIFI account with Telkom. What a frustrating experience! We went twice to their Sandton City branch. They told us that we must cancel via the Telkom app. We tried that without success. We eventually left the country and till this date Telkom still debits our account each month. So annoying!!!