Vodacom affecting my credit score even after I settled my account

I had a contract with vodacom in 2021, in 2022 I lost a job due to the covid pandemic. I called Vodacom and notified them that soon as I secure employment I will settle, as such can I get late payment forgiveness. They agreed that it won't affect me negatively. Then in 2023 when I secured a job, I settled the amount and closed the account. However, even today the missed payments still reflects on my credit score and it affects my score badly. It was not my doing that I lost a job at that time. Now I have no desire to take another contract with Vodacom as they are inhumane. When I call them to remove the miss payments on my credit record, they take me from one department to another with no assistance.