HORRIBLE SERVICE FROM MR DELIVERY

I placed an order from Mr Delivery from a juice shop in Parkhurst. The screen kept saying payment has been processed and they are waiting from confirmation from the restaurant.I kept refreshing the page but the screen remained the same.Eventually 50 min later i called the call center to find out what was happening only to be informed that my order was cancelled as the restaurant didn't have one of the items i requested and that instead of crediting me my money back they would give me a refund in three to 4 days, Apparently i was sent an email stating my order was cancelled.Why wasn't i notified on the app as that is where i placed the order and that is where i would get a status update on my order and why must i wait 4 days when they took the money immediately. To make a worse the agent was completely disinterested in my complaint and didnt even try to apologise