I've been offered next day delivery when I was at checkout on the app, I took it for R35 ekstra because it was the gift for my mother the day before her birthday

I've been offered next day delivery when I was at checkout on the app, I took it for R35 ekstra because it was the gift for my mother the day before her birthday. Her birthday has passed and I still don't have my item. The app only gives a message saying there's a delay in my order, but no option to get a refund for the service they couldn't deliver after advertising it.