Why did my debit order not go off

So i ger paid the 25 but becouse the 25 was on a Sunday i got paid the 24/10/2020 that was on a Saturday,money was in and woke up Absa debit order hasn't gone off on my standard bank account

I decided to call their customer care line on Monday the 26 and was advised to wait as the debit order has been processed and will probably go off midnight

Woke up Tuesday the 25/10/2020 debit hasn't gone off called their customer care line and was advised my account was in arrears, and when i asked why no one gave me a straight answer as i was told myb it went off Friday and myb then i didn't have money in my account

Explained to the lady that i have no debit order collection on my account and was told to myb transfer the funds and the lady wasn't even sure it will still go off, off which i made a payment to my loan account and it boused back to my account and i callled again and was told to draw the money of which these charges involved and go deposit it and that is again time i don't have as i work Monday to Saturday and mostly off on Sunday i feel inconvenient by the Bank and no one is acknowledging the mistake and no one is telling why this happened why didn't the debit order go off

Lady tried to explain saying its becouse i changed the amount to the initial debit order amount of which that i requested on the 27th way pass the debit order date