Sanlam wants to ruin my life

I had a Sanlam Money Saver Credit Card for an amount of R40 000. They discontinued offering it in October 2024. I had outstanding debt on the card and they sold it to Nimble. I have been paying it off and have almost settled it. But Sanlam refuses to remove the debt from my credit record despite (i) Sanlam having sold the debt, and (ii) the information being completely outdated. The debt continues to appear in my credit reports as outstanding and in arrears which is simply NOT TRUE. I have tried several times to engage them but they keep saying they don’t have control over INFORMATION THAT BELONGS TO THEM. My life has been made extremely difficult because Sanlam provides incorrect information to credit bureau. I am seriously considering cancelling all the policies I have with them.