Cancellation of Telkom contract

I have been trying to cancel my data contract with Telkom for months now. I have been to several stores who tell me i can only do the cancellation online. I registered a profile but now i am unable to link my account to the profile. I have chatted to the call centre agents who say they have escalated the issue but i get no feedback. Trying to speak to someone on the phone is nearly impossible and i have tried several times.

All i want is for my contract to be cancelled. Im extremely disappointed at the service i have received and will not be using Telkom again.