LTE cancellation months ago

I've cancelled my LTE from Telkom last year at the end of October, the paper work was completed early in November to which I was advised that the debit order at the end of October will be refunded which it was not!<br> <br> Further to this Telkom mobile tried to debit me each month since (which I had to reverse every time). Recently their debt collectors Nudebt started to contact me to which I responded that I've cancelled the out of contract LTE with Telkom last year.<br> <br> I've asked Telkom mobile to please send the letter of cancellation to their debt collectors. They took months to actually cancel it, they've not provided any proof that it was cancelled except an sms saying the case (***2) has been closed and after various requests the debt collectors are still calling me and Telkom is not providing proof that they've cancelled it!<br> <br> I'm being threatened with action at the credit bureau and this is ridiculous they simply need to send the certificate/letter of cancellation. I can't believe they think so little of their customers that their customers may have huge financial issues due to their putrid inaction. The person at cancellations that is supposed to assist is: Neo Letsipa.