Telkom is a (costly) joke

I am a Telkom data client who required access to 100 gb of data whilst I lived on a stand alone property. In June I moved into a complex that provided uncapped internet access for free and had no need for the access I was contracted to Telkom for. I contacted Telkom and an agent called Precious Mnguni called me back and advised that I should rather downgrade my account from 100 gb to 5 gb to avoid penalties. I agreed to this and on 24 June Precious sent me a mail using my case reference ***0, confirming that the account was downgraded. However, I continued to notice that no change was being made to the amount that was being debited from my account. I tried to contact Precious but she did not respond to any of my queries and eventually I escalated it . I was then contacted by a Sisipho Dondi on 08 October 2020 who informed me that she would be tracking my case until resolution. This actually happened and on Wednesday 28 October 2020 I received a call from an agent at Telkom confirming that my account was downgraded and would be credited with all amounts paid in excess from 01 July to date. I was satisfied with this outcome. Imagine then my horror when I received my credit report that afternoon that contained a note from Telkom that I had exceeded my credit limit on the very account that they were supposed to credit! This during a time when I am purchasing a house and the accuracy of my credit report plays a critical role in that process. I have thus been unfairly biased by Telkoms incompetence. Totally unbelievable and totally unacceptable! The level of expertise in that organisation is disgusting and I wish to have nothing to do with them in any way whatsoever. I demand that my account be closed and that I be presented with a statement of all monies due to me /required from me immediately.