Amount in arrears by the same amount that just got deducted the day before!

This Absa Home Loan thinks I'm an idiot.On Tuesday the 30 September 2025 they deduct the home loan debit amount.Just today 1st October 2025.My home loan is in arrears by the same amount they just deducted the day before instead of my principal amount owed going down after the interest cap and admin amount have been subtracted.It damn well goes up amount by the same amount deducted on Tuesday the 30 September which is in arrears the 1st October 2025 despite the damn amount being deducted from my account.What the **** is going what bull**** is this?