No more procrastinations please!

I had an account opened with Edgar's Welkom branch, I later wanted the account closed, asked them to debit every amount due, that was last in 2018, I was even given a letter that proves that I've settled my debt to them, they even promised to clear my name from having a bad credit record, when I check with TransUnion, it still reflects active with an amount of R617 due, I am bemused as to how because I gave them liberty to debit on a monthly basis until everything is settled, please I need my name cleared from that "debt" as it restricts me from gaining successful applications.