Incorrect update from Vodacom to credit bureau

I got a contract from Vodacom for data and agreed on a debit order every month. When I took the contract they did not debit anything from my account until the agreed date. A month later my credit report had a missed payment update from Vodacom. Called them and asked what happening they said the update was incorrect and they will rectify i must give the 22 days it will be removed. 22 days later I did a follow up and they told me to wait another 21 days. I want that incorrect information removed urgently