Transunion refusing to remove a long paid up account

I have a Nimble account no: *** which was settled in February 2020 which Transunion is refusing to remove from my credit profile. I have tried so may times to get this account to be remove, I also sent them the paid up letter, but they still refused to remove it. I called them and the consultant told me that it is because the service provider took time to update the information. These people do not realize how crucial it is for our information to be updated correctly as it affects our creditworthiness. This kind of service is to disadvantage people, especially black people.