WRONG INFORMATION PUT ON MY CREDIT RECORD

I App**** for a House few weeks ago. The banks came back to me that there is an extra loan appearing on my credit record and it affects my affordability. When I checked my credit record I realized that there is a loan taken on 25 September 2015, which states that I must pay R5000. I went to CAPITEC and ask them to give me a letter which states that I did not take this loan on the 25 of September and they should remove it on my credit record. After making various calls, the lady did not manage to assist and told me that she will handover a matter to her branch manager and try get some answers. I cannot wait for them anymore, as other banks need to receive confirmation of that I did not take that loan. I need an answer today, it is very urgent.