UPDATE MY ACCOUNT WITH CREDiT BUREAU'S (TENACITY)

I had an account with Ackermans/Tenacity that was overdue. I payed the account in full on 30 November 2018. On the 11 December 2018 i called them asking for payed up letter. They did send me payed up letter or proof of settlement clearance letter. August last year 2019 i pull my credit records to find out that Ackermans account hasn't been removed from credit bureaus means its 10 months later since the account has been paid and closed. I contacted Tenacity to find out why the account hasn't be updated. But i was asked to send payed up letter and the proof of payment. I did tht 20 times and now they giving me a run around to close that account. I request tht my account is updated with the credit bureau's ASAP. This is unfair because its April 2020 now and it affecting my credit profil.