Failing to refund - what a ****!

I had ordered a lot of seperate items and the app indicated that delivery would be from the middle to the end of September. I started receiving my items from the beginning of October. As things were being delivered every few days, i was not concerned. However, in the middle of November I requested refunds on at least 50% of the items which had still not arrived. They refused, saying that I should have cancelled the order within 30 days of delivery date. Nowhere does it tell you that you have to notify them within this time period or that you risk not getting a refund. This is a completely ********* company and they have effectively ****** R 1500 from me. It borders on a ****.