Vodacom you have violeted my consumer right

Now vodacom has decided to list me as was in arrears for the month of February after they refunded me and the account is still open as per credit bureau records, vodacom you have really messed up my credit history! I called you on Friday to request for paid up letter or confirmation that this contract was closed I still have not received it! I really don't know what you want me to do or unless I take legal actions against you which I will certainly do. I give you today to fix my credit history and I don't want to see this account reflecting as open on my credit profile!!! Remove that arrears status and provide me cancelation letter