unfair practice

I have been pressurising FNB to update my account with Compuscan since March and Fnb has said that they have done that but they are not sure as to why Compuscan is refusing to update my FNB Temp loan as paid up rather than the 90 days arrears that is on Compuscan. I have checked the Experian and transunion reports and hey have updated. its only Compuscan that keeps on saying that they never got any instrucations from FNB to update. compsucan kindly update the incorrect information on my report