Woolworths *****s from customer!

On the 22 July 2019 I settled my Woolworths account in full and called their financial services department to ask for a paid up letter. I was told by the consultant that she could see zero balance but it would take 36 hours to reflect and after that I would be sent the letter. To my surprise on the 26 July an amount of R44.97 was debited from my cheque account. So my question is, are the financials so bad for Woolworths that they are *****ing from their customers? Would not recommend anyone to open an account with them.