Still waiting for my order since yesterday

I made an order with them yesterday at 16:04 and still waiting for my items and they first **** and said they did deliver then they said no they’ll deliver today in the morning and I’m still waiting for them to bring my items,they are sooo *********** and I will never use their app again in fact as soon as they bring my items or refund me i will delete their app and warn all my family and friends about their service.can they please just bring my items or refund me back my money I’ll go try elsewhere.