Woolworths deducts money after payment was made

On the 26th of February 2021, I made an online purchase for a few groceries. I paid the amount that was owed (R1009.15). On the Sunday 28 February 2021, I received a call from Candice Powell to advise that 1 item was out of stock and 2 other items had to be substituted. This brought my cart total to R890.20, meaning that Woolworths owed me R118.95. This morning 3 March 2021, a debit order from Woolworths was made to the value of R890.20 ! Why?! Woolworths owes me money and not the other way around, so in fact Woolworths now owes me R1009.15 which was what I Initially paid for my online purchase.

Please rectify this immediately!