Debit activity on closed Pick ‘n Pay account

On the 15 June 2024, I opened a Pick ‘n Pay account, on the 6 July 2024 I settled and closed the account, this morning when I woke up I found that Pick ‘n Pay/RCS devoted money from my banking account for a account that is closed, I disputed this with my bank and reported it as a *****ulent activity. RCS can please explain why there is a debit on a closed account and also in your disclaimer it states that if your full amount is paid before the due date there’ll be no interest charged, the account was literally 2 weeks old and full amount used was paid and closed. What is this and please return my money that was debited.