Negative Info on Report not being looked Into.

Good day, i have been batteling to communicate with Experian SA to look into my credit profile for some time now. I have tried calling and ihave sent e mails regarding my dispute. On my report it shows negative payment history, some of those older than 2 years and some just passing the 2 year mark while also accounts have been closed, DPP Decoder Plan has been closed but still reflecting on my credit report as 8 months in arrears, with an amount of R 2136.00. this i have seen on my Nedbank Credit Report from Experian SA. Then there are 2 Credit profiles from Experian SA... My Credit Expert and My Credit Check. Both these reports have different credit scores and information on my report ? This has a negative impact on my report both ways. And i do not know which is which. I have been trying for months to get my credit profile looked into but with no avail. DPP DECODER PLAN, DMC3, DMC5 all these accounts have been closed but still reflecting a negative and negative payment history on my report. While most payment history on this is 2 years and older which had to be removed already. Please can you look into this urgently