Poor Service/Response

Two weeks ago I requested confirmation letter or e-mail to be forwarded urgently to ITC to update my credit profile as this is showing arrears for the past two years which has negatively affected my credit scoring making it impossible to apply for a bond. I received statements from date loan was taken out but requested this be sent urgently to ITC. A dispute was subsequently lodged with ITC. On 24/02, 25/02 & today 26/02 I sent e-mails regarding the dispute & called customer services but no assistance or feedback received. This is rather frustrating. No courtesy call just another email auto response with different ref no's provided. I've now lost a property at a good buy because of poor service from Nedbank.