Vodacom stop debiting my account , voola in credit bureau

Somewhere in July 2017 I received an sms from VVM that Vodacom has handed over my account to them for debt collection. I then contacted Vodacom to find out why they didn’t inform me that they were no longer debiting my account. The agent I spoke to said that they have emailed me several times. I asked her which email address did the use? She mentioned an old email address which was no longer in use and when I had a ********** upgrade dispute with Vodacom we were using an email address which I expected them to have on their system that’s the email they were using to communicate with me to resolve the dispute(I was surprised when an email address that was not use for over 8 years was mentioned) . I also asked her why didn’t they send me an SMS or call on my MTN number or send a letter as the sim card I had with them was a data sim which the agent didn’t have an answer to.

I want my name removed from the credit bureau ASAP.