Can't cancel LTE account

I have been struggling to cancel my month to month LTE account for 3 months now. I first went to the telkom store on 1 September to hand in my cancellation form. After a week I phoned the mobile line and they said I must wait 21 working days and then they will phone to say it's cancelled. After that time had past I phoned again and the person said that my forms were not attached on their side. I then sent my forms via email to this agent who promised that it will be handled asap. I went back to the store and they confirmed that the forms were never attached but they can see that I have now emailed it. When I phoned again a few days later they said that the 21 day cancellation process would have had to start again from when I emailed the forms. I phoned multiple times since then and each agent always has a different story for me. When I phoned yesterday they told me that they never received the forms even though the agent on the phone previously told me she got the forms. I am beyond fed up. I don't use this LTE and I don't want to pay for this anymore! Can telkom PLEASE just cancel my account and I am not waiting anymore!