FAST DEBITING MY ACCOUNT AND DOESNT WANT TO REFUND ME BACK

I requested the debit date to be changed to the 30th for only a this month and they couldnt chage it immediately. But the agent still went ahead and change it to the 2sc. They Got the payment on the 27th and today they debited R1008 WHEN I ASKED NO ONE CAN ASSIST. Mduduzi Mthembu was very rude and put me to Brenda Ruiter WHO DIDNT KNOW WHAT SHE WAS SAYING. i want my funds to be refunded back today with the bank charges and th debit date on the 27 of every month. i wont my money today.