Account closed but nedbank has not removed me from ITC

Account was paid in full on the 25th of January. Only received my paid up letter on the 9th of February. Contacted experian today and was told they have not received any communication from Nedbank. I need to request the proof that nedbank sent it because it takes 3-7 days from receipt from Nedbank to remove the listing. Called the legal recoveries group today and spoke to Patrick Ngwenya and he felt he didn’t want to speak to me anymore and just transferred me to Legal Recoveries Retail. Sandra in that department was actually very helpful and helped me however patrick refused to take my call. I need proof from nedbank that the paid up letter was communicated to experian to resolve this immediately. Unacceptable how I can settle this account in 1 month but Nedbank cannot even do what is required from them to remove this listing. Feedback is requested asap.