Negatively affecting my credit score over misinformation

I’m so disappointed in Vodacom. I’ve been paying every month with no excuses but somehow there’s a misses payment record on my credit report which has affected my credit score. I even called an agent in May about this and she stated that my payments reflect on the system. Meaning I have no missed payment.

This is my last year using your services and of my credit report is not updated then I will not update my phone contract and wifi.