Bad service

On the 16th of July, I bought groceries including milk from Makro Online. Did not unpack the grocery immediately after it was delivered. This morning as I was unpacking my grocery I realized that 9 bottles of expired milk was delivered instead of 10. The expiry date was yesterday the 20th of July. Makro is not willing to exchange or refund me for the expired Milk because it was bought before the expiry date.

My initial order was 3 x 6 litres of Everfresh UHT Milk Full Cream and they said they didn't have that in stock, so they gave the milk that was about to expire.

What if they had what I ordered in stock, and because the other milk was about to expire they decided to get rid of it by giving it to me.