Accounts closed over 3 months ago still reflect on my credit profile

I'm rather disappointed with CellC. Different stories everytime I enquire about the wrong amounts on my credit profile and for accounts which were closed 3 to 6 months ago (One 3 months ago and the other 6 months ago).

I tried calling and sending emails and I get different stories and empty promises that I will get called back. At the moment, I don't have any contracts / accounts with Cell C other than for one prepaid number.

I want to know when exactly is Cell C planning to remove the accounts from my profile? If there are no plans to remove the amounts, I want to hear it from the horse's mouth.