Order Item Cancelled whilst its available in Takealot Inventory

I made an order at Takealot,the cancelled an order item in my bouquet/basket without even consulting me.The Item they cancelled is Discovery Reusable Fabric Face Mask - Blue,they have the items at the same price as i ordered without explanation.Apparently it seems they want me to buy these masks in mass to reach the R450 free delivery threshold which is a waste of money buying things i don't need Order #***6