No indication when an item is out of stock. Placed an order just to arrive at the store for pick-up and be told they couldn't make my order. They also said that they could not refund the order; it would have to be done through the app. However multiple requests through the app have received no response at all. TL;DR: Taco Bell took my money and gave me nothing in return. Response to developer reply: I do not use Facebook or Twitter. The Contact form on your website is clearly the same form in the app, but I submitted it a third time per your recommendation.