Nimble Group refuses to Remove my ID from a ***** account despite a letter from Retailer

I am really appalled by Nimble Group, I find out there was an Edcon account listed on my account last year, I then phoned them and they told me that the account was transfered to VVM, who i then phoned and they asked me to submit at affidavit, copy or ID and 5 Signature specimen, which i did in February. I then phoned RCS the new owners on Edgars, who then told me that it was a capturing error on their side, in which my ID was mixed up with another client who was paying for it and they would rectify it. Which took me driving to thei pinelands office to eventually get them to remove me from their system, to which they indicated that they had sent a letter to ITC on the 28th of June, for them to mend my record. Nimble still has my details listed on then books reflecting on me credit score. I phoned them again, and they indicated, that the same account they claimed not to have access to, they had given to SSD, Shapiro and Shacks. I then phone and emailed SSD, who then requested a letter from RCS/Edgars indicating that i was not liable for the debt in question, which i then sent to SSD, and Nimble Group. SSD rep**** to say they have sent it to Nimble group to amend but no action from Nimble group. It's almost a year now fighting this thing that affecting my credit score,. I find the service very appalling and there is not direct access to accounts or to speak to anyone who actually has the authority to do something. The only thing you get from them is to email *** but even with that, all you get is an autoreply with a ref 4EDC130764NCF1and no actual action. i tempted to drive to their office in Salt river this week just to give them a peace of my mind and actually get this resolved. The worst service by far. Like how do you not give your clients access to an actual human being in accounts. This all seems to be a prescribed debt ****, like how do you not action something when i have sent you proof that i did not open the account, especially when you can actually see that the name used to open the account does not match my ID number used for said account.