Unhappy

I had an account with vodacom, where I bought a handset on contract. Sadly it happened that I lose my job it lead to a point whereby I could not anymore payments it later got handed over to Hammond & pole attorneys. We came to an agreement that I should pay in installments in order to clear my name from the credit bureau eventually they sent me my settlement letter, but still everywhere I go this debt keeps on popping up. I went to a few vodacom outlets for help, they suggested that I should send an email to Trans union but still there is no luck. It's been years ever since I settled the account, mind you I settled the account on the 31st of March 2020