wrong information sent to credit bureau

I opened a credit card with Nedbank on the 19-August-2020, I paid R1000 into the account before using it, then I used it and paid R700 again on the 16th of September, the again on the 30th of September I paid R700. I was shocked when I checked my credit profile that it took a huge knock because Nedbank has listed my account as defaulted for 2months. when I called the bank, they said sorry and it will take few days to send me a paid up letter. I am now worried that this Information will affect my score and hopes of buying a house soon. horrible service from Nedbank