TELKOM CANCELLATION AND RETENTIONS - ABSOLUTELY USELESS!!!!!

USELESS ON EVERY LEVEL! Been trying to cancel my internet fibre at home for the past 2 days and it's IMPOSSIBLE TO DO! Been calling the 10210 number, asks for a service number which it doesn't accept. Finally got through to a few call center agents at their cancellation / retention department - they're all USELESS! First they cannot assist me due to technical difficulties. When I finally managed to get through again, I was told their system is offline after giving them all my details. How does one cancel a fibre internet line at home without losing your mind in the process and being billed AGAIN and AGAIN and AGAIN for a service not being used???