installment required for inactive credit card

I am highly ****ed off with this bank now. After being with you for many years and never having any issues, I am not sitting with a big issue. I had a credit card with you which I paid up in full and closed.

I sat at the (Blue route) Tokai branch and went through the whole process of closing the account, even went back a month later to confirm it was closed because the card and credit still showed on my app.

Today I get an SMS saying an amount of R25 was due on the 25th and that I have missed the payment which will affect my credit scoring. I received 2 other SMS's also saying there is an outstanding amount.

I did not bother to into the store because I refuse to waste my time there as they clearly ****ed up somewhere! I wanted this sorted out, I want my money back that was deducted from my account without me even knowing. In fact, I do not want this capitec account anymore!

If this affects my credit scoring in any way, I will take this further!